Luis Pablo's apartment is ideal in size, design and location for a trip for 4-5 people. It is in a great location, close to the Guggenheim and all main attractions are within 10-20 minutes walk. It is remarkably clean and combines both modern and traditional interior touches.
It's on the floor above street level (first floor in Ireland; second floor in the US!) and, although it was being replaced at the time of our visit, has elevator access.
It's great. I would stay there again and highly recommend it.
Luis Pablo was very good - prompt and helpful - with his communications.