Time Out says
The architecture and the decoration are 1940s-inspired, an urban-chic concept where past and future meet in a unique environment.
Nostalgia is said to be a quintessentially Portuguese state of mind, and we might be inclined to agree if you admit we have reasons for it. Just walk around downtown and Lisbon's historic centre and gaze at the city's architectural legacy. That is part of what makes Lisbon so unique: the city has a foot in the past but still looks confidently into the future.
Altis Avenida might be the nexus where both strands meet. Where the Avenida da Liberdade ends and the Rossio begins, the building remains one of the most valuable modernist icons in Lisbon. The hotel is, inside and out, a worthy representative of late 1940s glamour. Its 70 rooms and suites, divided over six floors, are both kitschy and futuristic, with Art Déco features such as the golden, purple and wooden details, contrasting with the black and white contemporary decoration. The 16 Deluxe rooms have a balcony; all rooms have marble bathrooms and Egyptian cotton bed linens. Here's a tip – room 206 is the only one with a balcony in its bathroom. But if you really want the full retro-chic Altis experience, then ask for one of the (just two) suites. Not only are they large, with their living rooms and bathrooms equipped with both shower and bathtub, but they also offer a splendid view of Lisbon.
The top floor has the Rossio restaurant (the namesake train station is just across from the hotel), which took inspiration from Portugal's maritime traditions to develop a seasonal menu where fish is king – the lime and shrimp risotto is unmissable. The panoramic terrace is open to the public and, on sunny days, can get a little chaotic; just remember to make a reservation in advance.
Rua 1º de Dezembro, 120