Katy & Luis are very friendly people; helpful, but also not interfering. Communication was great. They gave us they're list of places to see in Barcelona (we didn't have enough time—just two nights—but it was nice).
Cozy room, good for weekend, and giant, amazing balcony with plants; comfortable kitchen and bathroom. The only problem was, maybe, lack of air conditioning, but it wasn't a secret. We could take our luggage a few hours after checking out. And they rescued our shoes from rain! (Balcony.)
Really good hosts.