
Oslo, Norway
Sommerro: Vibrant 1930s Art Deco palace in Oslo’s Frogner neighborhood with the city’s only rooftop pool and Vestkantbadet Roman baths
Occupying the monumental 1930s former headquarters of Oslo Lysverker (the city’s electrical company) in the elegant residential Frogner neighborhood of Oslo, Norway, Sommerro opened in September 2022 as an Art Deco architectural triumph. Holding One Michelin Key, the 231-room neighborhood palace was restored by London design studio GrecoDeco. Preserving original functionalist details and landmark frescoes by acclaimed Norwegian artist Per Krohg, Sommerro features Oslo’s only year-round rooftop heated swimming pool and sauna with 360-degree fjord and city views, the meticulously restored 1932 Vestkantbadet public Roman baths, and seven diverse restaurants and bars.
Arrival introduces travelers to buzzing Scandinavian 1930s glamour: personal hosts greet guests in the soaring Art Deco atrium beneath monumental Per Krohg ceiling murals with sparkling Norwegian cider. Day-one logistics focus on coordinating bespoke Oslo cultural, architectural, and fjord pursuits: walking to the Royal Palace and Vigeland Sculpture Park (10 minutes away), touring the Munch Museum and National Museum on the waterfront, sailing private electric boat charters across the Oslofjord, exploring Frogner’s upscale boutiques and art galleries, soaking in the heated rooftop pool with panoramic skyline views, and reserving dinner at the open-kitchen brasserie Ekspedisjonshallen.
Palace living balances city energy with restorative wellness: the subterranean Vestkantbadet Roman baths feature restored 1932 mosaic plunge pools, traditional Nordic saunas, cold plunge, infrared suites, and therapies utilizing organic Nordic botanicals. Dining spans seven distinct culinary venues anchored by the grand brasserie Ekspedisjonshallen (housed in the former electrical billing hall with live jazz music), rooftop Nordic-Japanese dining at TAK Oslo by Chef Frida Ronge, Spanish tapas at Barramon, and afternoon tea in the glass-domed To Søstre salon.
Accommodations comprise 231 rooms, suites, and private heritage apartments (including the Villa Inkognito private townhouse) ranging from 25 to 110 square metres. Each room features custom GrecoDeco Art Deco furnishings, hand-knotted rugs, plush king beds, and marble bathrooms with heated floors and rain showers.
Design purists, culture enthusiasts, and luxury travelers seeking 1930s Art Deco restoration, Oslo’s only rooftop pool, and vibrant dining in Norway should book Sommerro without hesitation. Travelers seeking remote Arctic wilderness cabins should look elsewhere. Grounded review consensus confirms legendary standing with a 4.8 out of 5 on Tripadvisor across 980 reviews and a 4.8 out of 5 on Google across 1,120 reviews.




First day
- Arrive in the Frogner district and step into the soaring Art Deco lobby of Sommerro.
- Check into your suite, admire the GrecoDeco velvet details, and head up to the rooftop pool.
- Dine on Nordic-Japanese dishes at TAK Oslo overlooking the city.
What guests say
Hotel Flock Score
Exceptional
Based on 2.1k published ratings
Category breakdown
Guests Love
1930s Art Deco Restoration & Rooftop Pool
Guests revere the GrecoDeco design, Per Krohg murals, Oslo’s only rooftop pool, Vestkantbadet baths, and One Michelin Key.
Ekspedisjonshallen Dining & TAK Oslo
Reviewers consistently praise the live jazz brasserie food, Frida Ronge’s rooftop Japanese dishes, and buzzing Frogner vibe.
Guests Warn
Charming Frogner Neighborhood
Visitors love being in Oslo’s most upscale residential district walking distance to the Royal Palace.
Dynamic Social Destination
Travelers celebrate the energy, 7 bars/restaurants, and warm hospitality.
The overall score is a review-count-weighted average of named public platforms, normalized to /10. Category scores — including cleanliness and location — are Hotel Flock editorial readings of those reviews, not a platform's private formula. Hotel Flock is not affiliated with Tripadvisor, Booking.com, Trivago, or any other review site.
Awards & Recognition
Historic 1930s Electrical HQ Art Deco Landmark
Nordic Hotels & Resorts
Only Rooftop Pool in Oslo
Condé Nast Traveler
MICHELIN Guide One Key
MICHELIN Guide
In the stay
- Full access to Oslo’s only rooftop heated pool, rooftop sauna, and Vestkantbadet baths
- Access to state-of-the-art 24-hour fitness gym and public Art Deco salons
- Full cooked-to-order gourmet Nordic breakfast buffet daily and high-speed Wi-Fi throughout
Usually extra
- –TAK Oslo and Ekspedisjonshallen multi-course dinners and sommelier wine pairings
- –Vestkantbadet customized Roman bath rituals, massages, and private infrared sessions
Good to Know
- The 231-room Art Deco hotel occupies the 1930s electrical headquarters in Frogner, Oslo, holding 1 Michelin Key.
- Includes Oslo’s only rooftop pool and sauna, restored 1932 Vestkantbadet Roman baths, 7 restaurants, and jazz hall.
- Located on Sommerrogata in Frogner, a 35-minute Flytoget train/drive from Oslo Airport Gardermoen (OSL).
Editor's Note
Book a Heritage Suite with restored Art Deco woodwork and curved windows, and swim in Oslo’s only rooftop heated pool at sunset before dinner and jazz at Ekspedisjonshallen.
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Reviewed by Hotel Flock · Last updated September 2026