Great apartment in a residential part of Barcelona. But was close to many different subway stops. We often ended walking to the close-by neighborhood of Gracia which as lots of shops and restaurants. There's also a lot of cafes/bakeries, cured meat stores, and grocery stores nearby.
The hosts were great! Very good communication and they provide a great guide of everything you need to know about the flat and some tips and recos on the city.
The apartment was awesome, very spacious and clean. The bedrooms are away from the main areas (living/dining rooms), which is great when you have kids sleeping.
Highly recommended!