The communication with Ricardo was excellent. He kindly accept my late check in(11PM).
About his place, it's a nice small room in a shared apartment with other two guests. Even though there are other guest in the appointment, during the day I hardly came across anyone.
The palce is in the south east of the city, but there is everything you need if you planning a long stay. The apartment is very close to Metro Portales.
Note: if you're traveling with your pet, make sure is well potty train because the apartment is in the third floor and there's no elevator so be prepared to walk up and down the stairs to walk your pet.
overall, i highly recommend if you're traveling alone. Ricardo is definitely a super host.