The building was designed by Ricardo Bofill and it is located in the beachfront, in the Barceloneta boardwalk. The hotel has 473 rooms with amazing views of the city and the Mediterranean sea. I haven't slept in the hotel but I have been there in different occasions in their discotheque and bars, they offer a good selection of cocktails and food.
Wet Bar and W lounge
If you think of summer, the Wet Bar as they call it is the terrace bar with access to an incredible pool right in front of the sea. It is the perfect end for a hard working week or an after work. They also organize parties with famous DJ's once in a while in the terrace.
In the lounge area, they have the W lounge bar, with designed chairs that hang from the ceiling and different spaces to relax and have a drink with a snack, in winter it is a good option to stay indoors.
Eclipse bar and Discotheque
They have a bar in the top of the building in their 26th floor called Eclipse bar, a circular bar that has incredible views of the city. My favorite cocktail is the passion fruit martini, a true delicatessen. Expect no less than 10 to 14 euros per drink, not the cheapest in town but drinking in style has its price. You can also get a bite in the same bar if you are hungry. They have a discotheque too, right in front of the Eclipse bar, you can check out in their web page what kind of music and parties they have every day of the week.
You can get into the discotheque for free but you need to be in the guest list, so get into this site and add your name and your companions in the guest list. Note that the guest list is free but there is a limit, you can get in until 1:30am, so get ready and be there before the time.
Placa de la Rosa dels Vents, 1, Final Passeig de Joan de Borbo, Barcelona, 08039