We had an excellent stay. The flat is, as the pictures show, fully renovated and newly furnished. One bedroom has an en suite large bathroom, whereas the two other bedrooms can share another (smaller) bathroom. Wifi and heating (in December) worked perfectly. Although the flat faces the street, the nights were relatively quiet. There is an access to a common terrace on the rooftop, which can be especially nice in the summer.
All in all we felt very quickly comfortable and at home!
Sergi, our friendly host, offered any help we needed. We could ask him easily if things were missing in the flat.
The location is just perfect in the district of Gracia, my favourite area in Barcelona. You have everything you need in the neighbourhood, including great restaurants, and plenty of transportation options.
We'll for sure come back at the next occasion in Barcelona.