Staying at Hermann’s apartment was a very good experience. It was clean and everything was as-advertised. It feels pretty new in there - I imagine he renovated it in the last few years.
Hermann met us to give us the keys and some tips about the neighbourhood (which by the way has some great eatin’) and he was super kind and quick to respond to messages / requests. We ended up staying for almost 2 weeks. Another perk - Hermann includes hotel-style cleaning in the cost of your stay.
The only negative we found is that the walls are paper thin, which seems like the norm in Mexico City. But you will hear people in the unit next to yours, too clearly at times.
Colonia Cuauhtemoc is a good area to stay in. Though there isn’t a ton in the actual neighbourhood except restaurants, it’s located centrally enough that you can easily walk to the Museum of Anthro/Bosque de Chapultepec, to Roma, Juarez, even to Centro along Avenida Reforma. If you stay, I’d definitely check out Mo+F (Japanese / Pan-Asian restaurant, $$) and Taqueria Gabriel (cheap and so delicious).
Thanks Hermann!