Marta is very friendly and helpful.
We arrived at 1 a.m. and she was waiting for us at the appartment. She explained the map of Barcelona (with all the tips and sugestions). If I have had any question, I just text her and she responded very quickly.
The appartment is very big and has everything. I was very happy that it has basic ingredients (such as salt, suggar, oil, vingar, powder for the dishes,...), so you are not forced to buy these stuff for 3 days of staying. It was very clean, the location it couldn't be better. I enjoyed staying there.