Esther and Toni are amazing hosts. They were easy to communicate with and the check-in was quick and without any problems.
The apartment is not too big and rather dark, since it's located in the lowest floor of the building and has very few windows that lead out into the backyard, which is surrounded by walls of houses.
It is very well lighted however and the location is unbeatable. It allows you to quickly reach most of the tourist attractions via Metro and the Sagrada Familia is merely a ten minutes footwalk away.
There is also a Lidl nearby for groceries and the small kitchen is well equipped.
A stay is highly recommended!