We had a great time in Sevilla! The location of the flat is perfect; it's walking distance to everything in the city center. The building it's in is beautiful and we loved the courtyard area. The bed was really comfy, you just have to watch your head going into the loft.
The only negative thing was the humidity and as a result, the smell. We got used to it, but there was a constant musty damp smell. Despite this, Alvaro was a great host and we would stay there again if given the chance.