I stayed in this apartment for one month.
First of all : Claudia is absolutely awesome host. Instant message response. Very kind and very professional.
Apartment has a very convenient and safe location: you are in a middle of everything. Subway station is just 1 block away ( 2-3 min of walking) - 2 lines: "D" and "H".
If you walk a few blocks up (10-15 min) - you are in the best Recoletto area, with many restaurants, shops, night bars etc.
Claudia offered free cleaning and sheets changing during the month I stayed.
Living room is facing a busy street. You have a little bit of city noise. But it din't bother me much.
Bedroom is facing the courtyard, so you have a very quiet nights.
Overall - apartment is very clean and nice.
Great value for the money you pay.