We spent great time in Cesar's apartment. We were there 4 friends but it is perfect for a group of 5 people. Even it has small rooms, it has all you need to have a comfortable and pleasant staying in Barcelona. It is very close to Sagrada Familia and all public transportation so you can go easily all over Barcelona. Cesar, the host, is kind and gives you in short time any information you need about accommodation or tips & tricks on what to visit. He is there for you for anything you need. I highly recommend Cesar's apartment!