First, the flat is absolutely stunning, Paz has her art decorated all around, it makes you feel like you're living in an art collector's home! The terrace is really lovely for the warm nights in Barcelona, we had spent many nights there. The kitchen is spacious and fully equipped, so if you like to cook-in, it's fantastic! Paz is an excellent communicator and is very quick to respond and help you out. She's very sweet and welcoming. The flat is also only a 5 minute walk to the nearest metro station, which is also a plus.
A note for some visitors - air conditioning is not complimentary and there is an additional ~10 euro charge per day for it. It was really hot when we went, so we opted to purchase the air conditioning, but it was quite expensive.