It's a nice apartment in a nice building in a great neighborhood. Plus, it's managed by a hip little hotel so you have them as a resource for exploring the city, which is always a plus. Clean, with lots of linens, Malin+Goetz soap and shampoo provided, great kitchen, living room and patio. And really, Gracia is a fabulous neighborhood.
The main bedroom is slightly awkward in that the front door opens directly into the room, and there isn't a great window in there (there is one, but it faces onto the central artery of the building). But it's not too bad, and overall I'd say the place is a great choice for most people.
Do note that you have to check in at the hotel that manages the apartment, and the hotel is 20 minutes away. They pay for your taxi to get from the hotel to the apartment which is nice. And the hotel is on the way from the airport to the apartment so it's not too inconvenient for most travelers.
Overall we were really happy.