My first ever AirBnb stay and it was great. The location is perfect. There's a market around the corner and lots of restaurants around. You're a 5 minute walk from the metro and if it's nice out, you can probably walk to just about anything you need, including many of the city's sights. Despite being in the midst of everything the place is really quiet. I *hate* noise and was worried about that, but didn't need to. I heard no street noise and almost nothing from the neighbors.
As for the apartment, it was exactly as advertised. The place was spotless and the bed was really comfortable. The kitchen was well stocked and they even gave me a delicious bottle of wine. Miguel was so nice, he gave me Metro directions from the airport, provided a handy book of recommendations and was super responsive. He even checked in on me on my second day to make sure everything was going all right.
All in all, I couldn't have asked for more. I would definitely stay there again.