My family and I had a lovely stay in Barcelona. Ana's place has some really fun architectural elements -- both decor and the actual apartment. It was also very close to Segrada Familia and Park Guell (for the Park I recommend the bus, since the walk there is doable though hilly.)
Positives - Location! The apartment is quite roomy with very tall ceilings. There are a number of bakeries nearby and in close proximity to green space and kid parks. We also used the kitchenette and washing machine while we were there. Ana was a lovely and responsive host!
Challenges - neighbors can be noisy, walls are thin, so from the bedroom you can hear the door to the building creak and then bang shut each time someone exits the building.