Nico was a perfect host - and he got tested with us! We arrived, there was no hot water. A few days in, the wi-fi breaks down completely. Nico was reliable and helped getting these problems fixed ASAP.
Somewhat disappointing was the AirBnB itself. For what is a former basement, it's cute - but it is a former basement, the floors are incredibly uneven, furniture is a little sparse (there's no dresser and only a couple hangers for clothes in the hallway) and there is a locked mystery door through which we'd occasionally hear noise and see the light turn on on the other side. The kitchen nook is small, there's no vent while cooking, and it being a basement, it is kind of dark. Especially on rainy days, it feels a bit like staying in a cave! The location is very nice other than that, super central and in a neighborhood I personally like a lot, so it's still a solid choice of AirBnB; our expectations were definitely too high, though, it would've been nice if we had been AWARE we'd be essentially temporarily living in a basement before arriving.