It is a nice appartment, close to some of the best tourist attractions, as it is Park Guell and Sagrada Familia.
We went with my 18 months son, and to get the trolley all the way up, it was a little bit chaotic, bcs the stairs are very narrow. But we survived ;)
We had a problem with the heater the first day, but they fixed it next day, so the communication was pretty good.
Thanks for the stay :)