We stayed for 6 nights, the area is safe and close to nice restaurants and shops, there is even a market nearby. The metro station Joanic is less than a 10 minute walk. We had no difficulty checking in, Ana was very easy to communicate with.
About the apartment: pros - the balcony is a plus even though it faces an interior yard (meaning neighbors' windows); the flat is spacious enough for a couple; the kitchen is equipped just enough to make breakfast; the building is quiet. cons - the wireless internet is extremely slow (I actually needed it to buy online tickets for attractions); the floor makes noise (in some nights the floor in the bedroom was making noise even though we were sleeping, we woke up and couldn't figure out why it made it since we weren't moving at all); the bathroom was clean but the shower is very small and because it doesn't drain well there was water all over the floor; there are dishes, but no dishwashing sponge or liquid.
The flat clearly needs some small improvements, but besides those it was a pleasant stay, and a much better alternative considering the hotel prices in Barcelona.
All in all, a welcoming host - thank you, Ana!