Carlos is super nice! And his apartment is nice as well. It is in a nice neighbourhood with embassies etc. Buses and metro are close by but it is not in the middle of things, which is both good and bad.
The flat is as depicted on carlos airbnb site and has everything one needs, including wifi, tv and good heating. Carlos stayed up until one o clock at night to welcome us and was easy to get along with (in english). I would be back!!