Excellent appartment in a fantasic location.
You are 2 blocks away from 2 different metro stations, literally downstairs you have a bakery/coffee shop and a small market.
It is very well equipped and is quite big, we were 2 adults and 2 kids and we had more than enough space.
The only problem we had was on the check in. 2 days before our arrival
Sergi informed that he would not be there for our check in but he hired someone to take care of it. Unfortunately when we arrived there was nobody there (after an overnight flight with 2 small kids I was not expecting this "surprise"!).
Anyhow, the positive side was that even being away, Sergi was very quick to reply my messages and within an hour or so we were inside the appartment.
Besides this problem on the check in, I would definetely recommend the appartment and would stay there again when I return to Barcelona.