The location is splendid especially if you plan on visiting Sagrada Familia, which is about ten minutes away on foot. Also, it is on the metro line which goes directly to Barcelona Sants railway station and of course close to the other different lines and bus stops which you might use to get to the old centre of BCN. Jordi was exceptionally helpful, because I changed my hour of arrival about two times (left earlier my previous destination), he always reacted immediately to my messages and was awaiting us in the apartment. This is really something I want to appreciate very much. Also, I was allowed to leave my luggage later than the check-out hour, and although I did not use this possibility in the end, it was still very helpful and reassuring.The flat is NOT facing the busy Av. Diagonal and is very quiet as a result. We stayed there for two nights at the end of October so we had no problem with the temperature (as in one of the bedrooms there is no A/C).