We loved our stay in here. The location is excellent, positioned in-between Coyoacán, Centro Histórico, La Roma, etc. Perfect for exploring the city. There are also loads of places to eat nearby.
The place itself is very nice, very modern, comfortable and quiet.
In our 2 month stay we didn't have hardly any issues at all, but any time we contacted Norma about anything she was always very quick to respond.
The terrace is a lovely and peaceful space too, and was a nice way to escape the 'desmadre' of the city at times.
Only gripes were the washing machine. Not really anything the host could do about this, but there is one washing machine between the whole building. So in order to use it, you have to book. Some days when I went to book it, it was fully booked for the whole day. So always make sure you reserve it in advance with security.
And the only other thing, the internet is not super fast, and the signal was a bit weak in the bedroom. To be fair, Norma did offer to come and take a look when I mentioned it, and I didn't take her up on the offer. Mainly because I thought unless she was going to replace the current internet for a high speed option, there probably wasn't anything she could do.
The above are minor issues, I think if this place had high speed internet it would be 5/5.