Roberto's flat was lovely. The perfect base to explore Barcelona from, it's cosy and perfect for two. We loved eating meals out on the terrace (worth remembering that it can be quite noisy out here - you are staying in a busy city!). We stayed for a few nights and loved how close the flat was to the Metro, local shops, supermarket, cafes etc. We used the airport taxi service that he booked for us and had no problems with pick up and drop off. Roberto was really helpful, and replied immediately when we had any problems.
The bed was comfy and the aircon was very welcome! Unfortunately the oven wasn't working when we visited, so we were limited to cooking on the hob, but this didn't matter too much and there are plenty of places to eat nearby.
The perfect Barcelona apartment for two, hope you enjoy your stay as much as we did :)