The description matches what you can expect. Our flight was 3 hours late into BA, however, José arranged to have his mom open the door for us. She doesn't speak English but explained everything in the house and how to use it.
The apartment is right next to everything and we felt safe walking around at all hours of the night. (Late nights with Fernet and Cola.) Palermo Soho was a 10 minute walk, parks were 20 min walk, San Telmo 10 min uber...
I would recommend shutting the window at night. There is a corner store that people hang out until pretty late.
I highly recommend this place. Clean, convenient, and next to everything!