This apartment has everything you need for your stay in Barcelona. It's close to 3 supermarkets & many fruit/veg stands. It's also a 5 min walk to both blue & green metro lines. The apartment is very quiet and you cannot hear the street noise. Plus, it's a residential area, so things get quieter so you can go to sleep. Lots of tapas bars close by too.
The air conditioner was a life-saver as Barcelona was having a heat-wave while we were there. We purchased an additional fan to help circulate the a/c around the apartment. The main bedroom has a ceiling fan, but the 2nd bedroom does not & it can get really hot during the summer daytime. Siestas are still fairly common in this part of Barcelona - 2pm - 6pm. You can expect most stores, pharmacies & restaurants to be closed completely on Sundays in this part of Barcelona, but it makes for quieter streets for walking & sitting in the nearby parks.
We stayed 10 days in the apartment and we used the T-10 metro tickets (Euro1 per metro ride). It turned out to be much cheaper over 10 days than to buy 2 x 5day ticket on the HOLA ticket (all inclusive transportation ticket in Barcelona).
Jordi & Marvina accommodated us with an early check in (YAAAAY!), which was wonderful after a red-eye-Atlantic flight. They were wonderful hosts who were quick to answer our whatsapp questions. Yes, we would definitely stay here again on our next trip to Barcelona, Spain.