A very spacious and comfortable apartment. There is a large, well-equipped kitchen, two bathrooms and everything else you might need. You can see a bit of everything from the central balcony: hills on the left, a lively road crossing below, Sagrada Familia and even some sea to the right.
There is an excellent seafood/sangria restaurant downstairs in the same building (pls try Calamari, Andalusian-Style).
The neighborhood is close to the touristic area but feels homely and residential. No crowds and the streets are very appealing and walkable. Plenty of grocery shops and several parks in proximity.
The initial check-in is based on some funny web application (and thus internet dependent), but that is a one-time procedure. Once you get through it, you can find the physical keys inside.
The apartment layout is interesting: there are long corridors with sharp turns (send some signals, or you will bump into each other at night).
Overall a very positive experience. Would stay there again.