He explains it's all about the new exciting and indulgent environment.
"The novelty of the hotel room is going to stimulate dopamine transmission in the brain, which pays a big role in arousal and sexual excitement," he says.
When we check in to a hotel room, we 'check out' of real life for a while, and this stress-relieving move adds to the sexual intensity.
He explains: "For sexual arousal to occur, especially in women, parts of the brain associated with anxiety and stress need to turn off.
"So I often advise couples to turn their bedroom into a love nest that's free from distractions. I think a hotel - as a sort of generic luxury - automatically helps people tune out the anxiety.
"There aren't photos of kids, bills that need to be paid, books that need to be read; you're in a place out of time, out of your life. And the shutting down or the pushing away of that anxiety, creating a boundary of anxiety and stressors of everyday life, is going to contribute to sexual arousal."
The sense of getting away from it all also adds to the idea of treating yourself, and can therefore increase arousal.
According to Yahoo News, Kerner added: "There's a psychological mindset when people check into a hotel that they can pamper themselves,"
"There's something a little luxurious, languorous, and sumptuous about a hotel that lends itself to feeling sexual."
So, time to book that romantic weekend away? Try one of these top hotels:
Romantic retreats for two
Why hotel sex really is better than regular sex
There’s no need to share a chalet when you can cosy up in this intimate little lodge for two. Set in Courchevel 1650, Petite Marmotte Lodge is the only chalet à deux in the Alps. Formerly a hay barn, it has been converted into a rustic, romantic retreat with magical mountain views from its outside hot tub. This place was made for lovers, with its inviting sheepskin rugs and roaring log fires. For added indulgence, spa treatments can be organised at Le Portetta Hotel, just five minutes away. You can also have a Michelin-starred dinner delivered right to the privacy of your chalet. Access to the on- and off-piste playground may be available right from the chalet’s doorstep but a day off the piste has never been more alluring. Powder White offers seven nights for two sharing on a B&B basis for 4,000 euros.
The water villa at beach haven The Manta Resort in Zanzibar is a private floating island with a bedroom four metres below the surface. This uber-romantic spot is as dreamy as it looks. The landing deck, at sea level, has a lounge area and bathroom. A ladder leads up to the roof where there is a lounging area to enjoy sunbathing, dining, stargazing and even sleeping under the stars with the sea lapping around the room. Then there's the underwater bedroom: a soft double bed surrounded by panes of glass offering almost 360-degrees views of the reef fish and tropical marine environment. Spotlighting the water around the villa at night from the underwater room is sure to be the most breathtaking experience to share with your loved one. Seven nights at The Manta Resort including one night in the underwater room and return flights costs from £2,913 per person with The Luxury Safari Company.
Looking out over the towns of Momjan and Buje from the hilltop village of Merisce, Casa Celestina has uninterrupted views of central Istria and the Adriatic. This 100 year-old Istrian house, perfect for a romantic couple, has been beautifully restored retaining its interior stone walls and beamed wooden ceilings, with the addition of locally crafted worktops and terracotta flooring. There are wonderful views from the large terraces on the ground and first floor (accessed from the bedroom) over the surrounding vineyards and olive groves. A week at Casa Celestina starts from £500 with Croatian Villa Holidays.
Set within a 4,500-acre country estate in Suffolk, this enchanting one-bedroom cottage has no electricity or WiFi and is heated with a wood-fired stove that also provides hot water. Hex Cottage at Wilderness Reserve has a working fireplace in the bedroom and sitting room, and is simply decorated with antiques providing a very special place for lovers hoping to get away from the world and hole up for a weekend. From £225 per night.
One for those who like their hideaways with a touch of the fairytale about them, The Water Tower in Trelissick resembles the legendary tower of Rapunzel. The topsy-turvy tower has a circular room on each floor linked by a spiral staircase with the kitchen at the top, a sitting room below and a double bedroom on the first floor. Unusually, the bathroom is on the ground floor and is accessed by a separate outside door. Three nights from £339.
The romantic Salkim Evi is a Thai-style villa for two, tucked away in the mountain village of Islamlar, around 20 minutes from Kalkan. Surrounded by forest with far-reaching views across the mountainside, the remote location makes a perfect escape for couples. Guests travel on foot for the last few hundred metres past forest and grape vines to reach the villa, which is enclosed by nature. The master bedroom has glass walls, affording stunning views even from the bed - over the pool in one direction and over the mountains in the other. Exclusive Escapes offers seven nights at Salkim Evi from £1,150 per person, including return flights from the private terminal at Stansted, Heathrow or Manchester, transfers, car hire, a Turkish bath and evening meal, daily cleaning, bread delivery and a welcome hamper.
Nestled in the branches of a 150-year-old Sycamore, Ackergill Tower's Treehouse boasts 180-degree views of the surrounding woodland. Lovers can soak in the large circular bath before retiring to the seven-foot round bed, with a twilight ceiling made for romantics to star gaze. The treehouse only sleeps two but is one of the largest in Europe, and contains a whole host of extravagant features for the stay of a lifetime. From £215 for overnight stays.
Beautifully designed and set on the shores of Little Harbour on the Caribbean island of Anguilla, Fletch’s Cove is a villa inspired by contemporary Mexican architecture with stunning views across the water to St Martin. The one-bedroom villa was designed with comfortable, casual living in mind. The Master Bedroom suite, with its solid oak floors, occupies the entire second level. French glass doors open onto a large balcony, ideal for lounging, sunbathing or, in the evening, taking in the lights of St Martin. Fletch's Cove is set in quiet, private surroundings so the sound of surf, wind and the occasional zenaida (turtle dove) are likely to be your only disturbances. From $3,600 per week.
Despite its name, you will find yourselves far from 'in the dog house' at this cottage in Kirkby Lonsdale, near Kendal in the Lake District. Situated on The Underley Estate in the beautiful Lune Valley, The Dog House is a one-bedroom cottage that combines modern living with the tranquillity of the neighbouring rolling countryside. Couples can enjoy a romantic escape in this beautiful part of Britain, exploring an area rich in history and natural beauty. From £350 for a seven-night stay.
Enjoy the romantic side of glamping for the first time in Atlantic Canada thanks to Ridgeback Lodge's new Dream Domes. Located on the Kingston Peninsula, overlooking Kingston Creek, Belleisle Bay and Saint John River, each Dome boasts a king sized bed, luxurious bathroom, small kitchenette, as well as a barbeque and private wood-fired Japanese hot tub. The unique domes are fitted with huge bay windows, offering stunning views overlooking the surrounding forest and Ridgeback Lodge’s 185-acre grounds. While here, you can enjoy a dip in the beautiful two-acre swimming pond and trek the various groomed summer trails or relax in a romantic setting by the fire. From $145 per night.
Le Bastidon is a stunning home built for total privacy and surrounded by lavender fields next to the tiny Michelin-starred hotel La Bastide de Moustiers in Provence. The suite is perfect for couples with its own secluded garden and private access to the pool. Designed by Alain Ducasse and French designer Tonia Peyrot, it is decorated in a contemporary style with unique furnishings. Breakfast for the couples is served on the private terrace of Le Bastidon and the stunning Verdon Canyon is nearby for romantic scenic walks. Three-night romantic package from £1,450 per couple.
Perfectly proportioned just for two, this little sanctuary by the sea is housed in a 14th century Saracen tower. Occupying the ground floor of the historic building, La Trasita Piccola is attractively styled with crisp white décor and furniture, complemented by cool tiled floors and black wrought iron wall lights. The double bedroom gazes out through double windows on to the blue of the bay, and there is a shower room and open-plan living room and kitchenette. A door leads out to a private walled terrace under pine tree shade, an idyllic al-fresco dining area with fabulous sea views. Seven nights from £758.
In a clearing in the woods, encircled by oak and olive trees, this unassuming little cottage nestles in a walled and gated garden, where a six-metre plunge pool is formed to blend-in like a natural rock pool. Surrounding lawns spread to an open-sided summer kitchen, elevated to enjoy the valley views. There is a covered dining area and a timber sundowner terrace in dappled tree shade for you to relax as a couple al-fresco-style. Luxury toiletries are provided in the shower room and outside Bergerie Lila, you can enjoy romantic horse rides and boat trips to the spa, bar and Cave restaurant. From £1,353 for seven nights.
If it's privacy you're after, the world's deepest underground hotel room will ensure you won't be disturbed. Situated just north of Stockholm in Sweden, the Sala Silvermine Mine Suite offers a luxurious and romantic stay. The suite for two is 155m underground and surrounded by winding galleries and huge caverns. Upon arrival you'll receive a guided tour and be served a basket of cheese, biscuits, wine and chocolate, before spending the night in the suite. £370 per night.
Chalkley's Tree House is the ultimate bush bedroom for lovers. A secure and lavish platform under the stars, the treehouse has all the five-star comforts, but affords an experience as wild as the animals that roam beneath it. Guests are taken to the treehouse at sunset where drinks and a scrumptious picnic dinner await. Utterly private and intimate, the treehouse is at the heart of some of South Africa’s prime wildlife country offering you the chance to discover the resident wildlife in almost total seclusion. Guests sleep in a luxury king sized bed on a raised platform in the middle of the game reserve, surrounded only by the calls of nocturnal animals and the brilliant stars of the African night sky. Four nights from £5,197 per person with Aardvark Safaris, including transfers and international flights.
Set on the picturesque harbour in the popular Cornish village of Mousehole, Harbour Moon is an indulgent, architecturally-adventurous couples' hideaway. Inspired by the harbour around it, the original fisherman's cottage boasts an open-plan bedroom with a wood-burning stove, rough granite and Cornish Shrimper-coloured lime-rendered walls, worn wooden planks and a glass floor in front of the bedroom window, so you can watch the tide roll in from anywhere in the room - all giving the romantic bolthole unique seaside charm. From £890 per week from Beachspoke.
Luxury hotel Grand Hotel Kronenhof, in Pontresina, invites romantic guests to go back to basics and spend the night in its Alpine hut in the mountains, around 10km from the hotel. The simple rustic chalet has no bathroom and is just big enough for two, with the only cold running water from the chalet’s private well. Surrounded by unspoilt wild pasture, the hut offers you the chance to get back to nature, discover wild flowers and breathe in the fresh mountain air. A butler will prepare a three-course evening meal, include traditional fondue, before retiring back to the hotel and leaving you alone to enjoy an Alpine evening kit of candles, torches, books of mountain tales, typical Swiss card game Jass and warm bed socks. The Alpine Hut Retreat package costs £560 per person and includes two nights at the Grand Hotel Kronenhof and one night in the Alpine hut.
At the aptly named The One Hotel in Angkor, Cambodia, you won't be queuing to check in or worrying about noisy neighbours as you will be the only guests. The hotel offers just one double room packed with luxuries including a contemporary wooden sleigh bed, iBook and iPod laden with tunes, plus your own mobile phone while you’re in town. French windows open onto a balcony, which leads to a shaded roof terrace for you both to loll about on the comfy daybed or slip into the hot tub and gaze up at the blue sky. Set in the heart of the old town, there is plenty to see including the Angkor Wat Temple, the stone faces of the Bayon and the bustling market, or choose to relax with a massage on your private terrace. Seven nights from £578 per person on a B&B basis from i-escape.
This beautiful period character cottage in the heart of picturesque Cotswold village Longborough has luxurious furnishings and interiors. One Hope Cottage offers the perfect setting to cosy up in front of the wood burner after an afternoon exploring the Cotswold Way, on bicycle or foot, wandering through the quintessentially English village and stopping at the tea room or local pub. The cottage boasts one bedroom, a well-equipped kitchen and outside is a pretty courtyard garden with seating. Guests are also welcome to bring a dog for those in search of a pet-friendly, romantic escape. From £495 per week.
Stylish and elegant one-bedroom Villa Eros is the ideal couple's retreat, nestled high on the hills above the resort of Skala on Kefalonia and boasting panoramic sea views. The villa offers a welcome refreshment pack on arrival, a concierge service advising guests on everything from the island’s hidden beaches to private wine tasting experiences at the local vineyard, a twice weekly maid service, in-villa spa treatments and a private swimming pool. The shaded veranda offers outdoor seating and the perfect spot for al-fresco dining. Inside the villa, a few marble steps lead up from the living area to the double bedroom, complete with a luxurious en-suite bathroom. The bedroom leads out to a secluded terrace with sea views, ideal for watching the sun rise together. From £525 per villa per week from Unique Villas.
What could be more romantic than sailing off into the sunset on your own yacht for two? Indonesia Yacht Charter's Alexa offers understated luxury and total privacy for couples. The Indonesian phinisi is a super stylish yacht built for only two guests and offers the ideal opportunity to propose or just soak up the romantic sunset as a couple. Inside, there are generous living spaces, antiques and a professional kitchen for the on-board chef. While on your romantic escape, explore the islands of Sumba, Flores, Sumbawa, Sulawasi and the Komodo National Park at your own pace and in laid back style. From £2,500 per night.
For a weekend of indulgence, head for the Indio Lakes near Bovey Tracey where you can relax at this wonderful lodge. Overlooking waters created by monks of the nearby In Deo Monastery, Ivy Lodge offers a breathtaking waterside setting. In addition to the living, dining and cooking area, there is a romantic bedroom with a four-poster bed and doors that lead to the enclosed terrace. Here you will find your own private summer house with a private hot tub and sun loungers. During your romantic getaway you can explore the surrounding woodland, taking in the enchanting lake views or venture to Dartmoor and dine at one of the many local country pubs. Three nights from £410.