Mila is really nice person who can help you with everything.
Locality is good, it is about 30 min. by walk to get to important historic sights (park Guell, La Sagrada, Bunkers del Carmen, Gothic quarter,...) Also i can recommend you go for lunch/dinner to buffet Wook Street which is also near the house and local shop center. Metro is in front of house and beach is also very near (and clear and you can choose from clasic, nudi or gay beach :D ).
Just one thing was bad for us and it was bed. Folding sofa with next bigger soft mattress on it isnt very comfortable. But i guess it depends on person maybe.
Everything else was okay and we like it :)