We had a lovely stay in Sants: the location is great if you want to be slightly further out of the centre of Barcelona but very easy to get into the centre/main attractions/beaches due to the Metro station and bus links. The apartment was as described, very roomy, with a little balcony (no view but we enjoyed the privacy of it) and aircon in all the rooms. Whenever we had an issue it was sorted asap with regular communications. Thanks for having us!