You should stay here!! Josep and Lourdes are so polite, kind, helpful, and communicative. The apartment was spacious enough for myself and 2 grown brothers, and was close to many buses, metro lines, and was in walking distance from a ton of cafes, restaurants, and bars. Gràcia is a very hip area, with lots of young people and cool things to do.
One thing is that the loft area of apartment can get pretty warm, we had to open the window. I would 100% stay here again!