Amazing apartment! We stayed here for 5 nights (worked remotely for 3 days) and it was great - centrally located in Palermo with easy access to cafes, restaurants, bars, shops, and nice colorful streets which made coffee runs and ordering food delivery easy.
The apartment itself is located in a very nice building, the studio was nicely designed and sized with a long table good for two people on laptops. Connection was unfortunately spotty on two video conferencing occasions but had no problems generally (speed was at 70mbps on our stay). No ensuite washer/dryer but they had a laundry room on the 4th level which needed special tokens from the host. We were successful doing 1 out of 2 loads (unfortunately the laundry broke down before we could do a second round and it did not get fixed for the remaining 3 days we were there) and with that the host had generously offered to pay for laundry service with a recommended laundromat nearby! Shower had great water pressure and we especially loved the towels!
Overall communication was great via Whatsapp, they were always quick and willing to respond to any of our queries, check-in was smooth. Definitely recommend this place and will stay here again the next time I'm in Buenos Aires!