We stayed in Deisi's apartment in April 2014 for 5 nights. The apartment is very roomy, clean and completely equipped with everything we needed. Moreover, the street was pretty quiet at night (unlike other urban zones in Barcelona) and we could sleep without problems. The metro station is at roughly 200 m away (the Sagrada Familia is only 10 min away by foot) and there's a small supermarket just next door open till 2 at night where we bought food and water. Our kids just loved the several playgrounds located on the pedestrian zone right in front of the house!
I would surely reccomend Deisi's apartment to anyone travelling to Barcelona!