Be sure to plan plenty of time sitting inside this rental, staring out the huge window and watching the world go by. Best words I can use to describe is "fully immersed" in the sights, sounds and smells of Barcelona. Located above a cafe, you feel like you live in this great city, not a tourist.
Right next to the Cathedral, you do see many tourists, but you enjoy smiling knowing that their sterile hotel room probably doesn't have a 12' long dining table to talk to family over a big meal you just bought at the nearby fantastic market. Their room doesn't let is huge amounts of air through huge doors at night while you sleep.
A veteran of dozens of rentals, I can say with confidence this is one of my favorite rentals ever. Something about looking out of those windows, hearing the singers at night, feeling the energy. If we go back to Barcelona, we will stay here again.
The owner was very accommodating, even walked us to taxi stand and said goodbye on person. Owner tried hard to make the WIFI stronger in all rooms but only strong in 2 of 4 rooms. Wasn't a big deal. We went and ate tapas instead.
If you want "library like quiet" then this rental isn't for you. We loved the gentle racket late into the night. Made us want to go join the party.