Where should I start?? Everything was GREAT! The communication with Mechi was easy and quick from my very first message, when I was asking about cancellation policies and Covid and she explained everything so that I could understand it. Before and during my stay, she always answered quickly and was super helpful if I had a question.
The apartment, the building and the location are all awesome. The apartment is a very comfortable studio apartment, with everything you need for a comfortable stay: A full kitchen (including cleaning supplies, salt & pepper, etc.), a kitchen table with comfy chairs (I used that to work), a bathroom with a hairdryer and a full set of towels, a large closet with a laundry basked, iron (so nice to have!), and different adapters for your electronics, fast wifi, a little balcony, air condition (I didn't need it much, but it worked perfectly) and, the most important thing for me: a very, very comfortable bed! I have spent a lot of time in Argentina and found many beds to be very hard. This one had the most comfy pillowtop ever; loved it. (There is also a comfy couch for reading etc.)
The building is very nice and well maintained, with 24 hour security. The gentlemen at the security desk were super nice and helpful. As described in the listing, the building is on a quiet street, and being on the eight floor, noise was not an issue - that was the second deciding factor for me, after the comfy bed. (In the apartment, you can hear the "pling" of the elevators, but I always sleep with earplugs anyway, so it was not an issue at all and I think most people wouldn't even notice.)
The location is absolutely perfect - it is in Almagro but right at the "border" with Palermo and Villa Crespo, which means that tons of places are within easy walking distance. There are several bus stops close by, and the metro (subte B) is only a short walk from the apartment. The area is safe and extremely walkable. (Bonus lunch recommendations: Doña Cocina on Bulnes 802 and Eretz Cantina Israeli on Malabia 1583, both very tasty and reasonably priced.)
I wholeheartedly recommend this place and really really hope it is available next time I go to Buenos Aires.