"The chic and intimate ABaC sits on the Tibidabo hill at the north end of the city, on a street lined with fantastic (and fantastical) modernist mansions. The welcome is discreet but warm, and includes a tour that culminates in the small but attractive spa. In the 15 airy guest rooms, white dominates while daubs of dusty color and at least one but sometimes two big TVs add interest. Divided bathrooms aren’t huge, but they’re well-planned, and come with his-and-her Hermès toiletries. And as you move about the room, the high-tech lighting responds to your location. That said, you may never want to leave the sexy banquette-style sofas along the picture windows in some of the larger rooms. Never, that is, except to dine in the one-Michelin-star restaurant, which is overseen by chef Jordi Cruz. Breakfast, an indulgent three-course affair, is worth getting up for."