I spent a few days at Ben's appartment with my gf and it was really nice. Benjamin is a very cool guy that will give you all the Infos you need for your stay.
The flat is exactly like it is on the website and you have wifi, iron, Air conditioned ( not that strong but at least it cools normally ). The metro Bon pastor is just 5 min walk, La Maquinista ( mall ) is just 12 min walk also, the beach is only 25 min by metro...
We just enjoyed Barcelona in Ben's flat and we were even allowed to open his wine bottle. Thx man :)
Just one thing: the shower water goes very very slowly. It would be nice if it can be fixed.
It was very nice to stay in this lovely flat and for sure I recommend it.