The apartment is well located at a nice neighborhood. Even tough it is not that close to the city center, subway, train and many bus lines can be reach by a short walk.
Esther was a great host! We had cleaned towels every day and breakfast, coffee and tea were also included. It was raining in Barcelona for two days and Esther borrowed us her umbrellas so we could walk around :)
Downsides: wifi was really slow inside the room (slightly better in the kitchen and bathroom); the room is smaller than it looks in the pictures - we were 3 and it was difficult for us to move after setting up the third bed; there is one more Airbnb room in the apartment so we had to share the bathroom (supposedly private).