I much enjoyed my stay!, and would certainly stay again. Everyone was very kind and helpful. The upsides: great location (in a quieter street as opposed to e.g. the party-like Plaza Serrano); the washing machine in the apartment!!!; the 2 balconies, 1 in each direction; the AC; separate bedroom; nice building and elevator; friendly neighbors; awesome help and contact when I had unexpected changes for check-in/-out: thank you!
Confusing was that I interacted with 6 different people overall, and sometimes with differing information, and also there was advertisement mixed in for a restaurant, which is not bad, just a lot. The pool is rather small, but it's not a big issue, as I don't use it, but different expectations might be created. Some interior is a bit more worn than one would infer from the photos, but still nice. If you are dust-allergic the guest couch/bed will not work for you. They should not rely on watshapp to announce arrival, as tourists will not yet have a SIM card.