We loved our four days staying at Merce & Jepis' apartment! It was extremely convenient to the airport shuttle, the train, and other attractions in the area. Other than a day trip outside of the city, we did our whole time in Barcelona on foot from the apartment -- to Sagrada Familia, the Gothic Quarter, etc. If we wanted to venture further, that could easily have been done with the great proximity to public transportation. The apartment itself was lovely, where we were happy to return for a siesta and at the end of the day. Highly recommend for a family or group of friends!