Atun was incredibly prompt and helpful over email and his friend Partik who gave us the keys was very friendly and accommodating.
The flat is in an ideal location near the gothic region basically just off the Ramblas. You can see the bathrooms have just been done and the flat is nice and spacious. The only criticism we have is that it wasn't very clean when we arrived.
Another note - there are a few flights of stairs to walk up - it wasn't a problem for us however if you have lots of bags etc it can be a hard work.
All in all it was a lovely experience