The location is perfect, in the heart of Copacabana a few minutes walk to the beach. WiFi is fast enough to work online and have video calls, but has occasional glitches which I substituted with my mobile connection. The host is very nice and was there when I checked in.
The only thing I didn't like so much is that the apartment is quite dark since its only window is facing the backyard surrounded by high buildings, so not much sunlight finds its way down there. The positive aspect of this is that it's quiet because not facing the road side.