Aside from a small issue with the air conditioner in the bedrooms (unfortunately maintenance was scheduled for the day when we checked out) not working when we stayed at the apartment, everything was great. Luckily the weather cooled a bit during our stay and we were fine with the living room air conditioner working well. We probably would have turned the bedroom air conditioners off when we slept anyway :)
Check-in was easy and Cinta's son, Mike, met us at the apartment and was very understanding when we checked-in about an hour later than scheduled due to a delay of our flight into Barcelona.
All required amenities were in the apartment for a comfortable stay.
Location was also convenient.
Our family of four (including two teenagers) had no issues with the wall between the bedrooms being on the thin side (the upper part of the walls are actually glass) but I can imagine that two couples may be uncomfortable with sounds being heard through the walls.
The terrace in the back was perfect for our morning coffee (bought from the cafe just downstairs).
For us, it was a great place to spend two nights in Barcelona.
Thanks Cinta and Mike!