Mariona's place was very centrally located at Aviguda Diagonal about five minutes away from the Sagrada Familia! The apartment was in a very beautiful heritage like apartment building with all the amenities one could think of. As it was located right on one of the busiest roads in Barcelona, it did get noisy if the doors to the balcony were kept open. However, this wasn't a problem when the doors were shut!
Mariona was very very helpful throughout the stay and even helped us book an early taxi to the airport. The apartment itself was very clean with a very carefully designed interior that was a pleasure to live in. I highly recommend this!