Claudia's place is a safe and tourist-friendly spot, a very good option for your stay in Buenos Aires.
The apartment is very quiet (especially at night and in the morning) and well illuminated, not an easy to find combination in this city.
Claudia always responds very quickly through WA to my requests, but in 50 nights (51, I mistaken the departure date at reservation time through AirBnb and she lets us stay one more night) we did need anything from her, the department was fully equipped and all was working well.
I hope to find it vacant for my next trip to Buenos Aires!