Maik is a very gracious host. He was helpful prior to our arrival, and check in and check out went smoothly. Maik even let us leave our bags at his place on the day of check out, which was really helpful because we weren't flying out until that evening. The location of the apartment is great. Immediate neighborhood feels very safe and offers good amenities. Great bakery (Boulan) just a few blocks away, a reasonably priced laundry service across the street, etc. We walked a lot and used Uber, but there are two Subte stations in close proximity.
The apartment itself offered everything that we might need in terms of space, and we appreciated the personal touches. Though very tidy, the apartment seems to have had some moisture issues over the years. Not surprising, given the fact that it's a ground floor garden apartment, but there's sort of a moldy, deteriorated quality that wasn't great. That may be common in Buenos Aires as a whole, but it wasn't quite what we were expecting.
The bed is comfortable enough, and the apartment is generally quiet. There was one night when the neighbors upstairs kept us awake until about 2am, but our time in the apartment was peaceful more often than not.