We enjoyed our stay in this cosy appartment. It was easy to find and incredibly central in Barcelona. As the bedrooms faced an inner courtyard and the doors to the bedrooms were well isolated, it wasn't noisy. You could hear others in the building when sitting in the livingroom, but that we didn't mind. It's a small-ish space, but cleverly designed so that even two bathrooms and a large comfy couch fit! I would say that it might be somewhat small if you want to stay with 4 people for longer than a couple of nights. All in all, a good base to explore Barcelona from!