Overall our stay was fine. Location was great for us, with family nearby, and only a short walk for the bus or local amenities. Would recommend Buen Ayre if you like your steak! The flat was warm and comfortable for the four of us. Angelica was generally a good communicator.
We did however have a few issues/observations:
. internet was not working on arrival - reported imediately but it took 2 days (out of a 3 night stay) before maintenance contacted us to repair - meanwhile we had purchased a part locally to get it working as the fault was obvious (and who can do without internet these days!) - at the time of writing the cost of this has not been reimbursed.
. checkin/checkout was a 10 min walk to collect/drop-off the keys
. kitchen sink very slow to drain