The apartment (and host) gets 4-5 stars but the building gets 2 stars.
The apartment was lovely. Clean, airy, bright. A bit too sunny our first day -- it was hot in the living room in the afternoon sun! Luckily it cooled off after that and Diego sent an extra fan as well, which was great. We struggled with getting a warm shower but otherwise had no issues. The beds were comfortable and there was plenty of space for us in the apartment,
The building was not great. There was trash on the stairs and in the hallways. After I complained to Diego, the trash was cleaned up and the stairs scrubbed which helped but it still smelled bad.