Oslo’s Art Deco connections just grew stronger with the opening of Sommerro, housed within a historic building in the city’s West End neighborhood of Frogner. The structure itself was once the location of the city’s original electrical company, Oslo Lysverker. The conversion to urban, luxury lodging features 231 guestrooms, 56 residences, seven restaurant and bar options, and meeting and event spaces for up to 150 people. There’s also a 100-seat gilded theater and expansive wellness space, including a full-service gym and Oslo’s first, year-round rooftop pool, sauna and terrace.

© Lars Petter Pettersen

Ranking as the country’s largest-scale preservation project to date, the hotel (part of Nordic Hotels & Resorts) sources sustainable seafood and local produce, engages in the support of social enterprises such as Sisters in Business, and is committed to the use of green materials for products and services. Additional sustainability features include bicycles for guest use, parking and free charging for electric vehicles, a complete ban on plastic water bottles ,and use of renewable energy sources.

“Sommerro is more than a hotel. It is an iconic building housing years of history, located in one of Oslo’s most vibrant and exciting areas. We want everyone to feel at home at Sommerro, whether you are a guest or a local seeking a place to hang out with friends, work, or simply relax in beautiful surroundings,” said Petter A. Stordalen, founder, Nordic Choice Hotels, now known as Strawberry. “We believe that Sommerro will take Oslo to the next level of hospitality, and I am really looking forward to opening the doors to this fantastic project, bringing the building back to life for more generations to come.”

© Lars Petter Pettersen

Room categories range from cozy loft rooms to sumptuous junior and Heritage suites, fitted with Art Deco details, beds from Swedish sleep brand Hilding Anders, and rich textiles that include upholstery with 1930s-era Norwegian motifs. Original local art is featured throughout, including an enormous wall fresco and ceiling mural by noted Norwegian artist Per Krohg. Pop-up music and cultural events are curated by resident jazz musician and composer Maren Selvaag, and both classic and modern Nordic cuisine are featured in the property’s various restaurants. Guests can also opt for Spanish tapas and wine bar Barramon.

© Lars Petter Pettersen

This month, one of the country’s last remaining original public baths — dating to 1932 — will open. The 15,000-square-foot Vestkanbadet underground wellness complex includes a wall mosaic by Per Krohg, restored Roman baths, a sauna, cold plunge, full gym and treatment rooms.

© Chris Aadland

Try a Wim-Hof-style, cold-water breathing session; a workshop with a nutritionist; a masterclass with a sleep expert; or a two-day electric sauna boat retreat on the nearby fjord in partnership with KOK (which means “to cook” in English).