Javier is the best Airbnb host I've ever had. A group of six friends and I stayed at his apartment in Sevilla and we were all very happy with the place. Javier was extremely prompt in his communication back and forth not only before our stay, but during it as well to make sure everything was ok.
Javier took the time to greet my group, and provided laminated sheets of directions, wifi info, shower instructions, restaurant recommendations, and so much more. He was also very flexible with our checkout time, which we appreciated since our travel plans were up in the air until the last minute.
The pictures don't lie: the place is big and very clean. All six of us were very comfortable with our lodging and, never had to wait on someone using the bathroom as he has 3 in the apartment.
Location was great as well. Everything was within a 10 minute walk from his apartment.
In short, you cannot go wrong with choosing Javier as a host. Outstanding on all fronts.