Maria and her family were wonderful! They greeted us at the apartment, helped us find the Barcelona Sites on our map, explained items in the apartment (AC, etc) and were very gracious.
There is AC in the main living area and one bedroom. there's a fan in another bedroom, but really it was pretty cool at night if we left all the doors open for ventilation. never an issue.
kitchen was well stocked.
patio is AWESOME. Heads up that you need to be quiet after 10pm, as the patio is surrounded by other apartment terraces. Noise carries so this is not the place for a loud group that stays up late.

The apartment is located about 2 blocks from a metro, very easy. lots of supermarkets and restaurants within walking distance
We had a great time and would stay there again!