Excellent location. Very Safe. Restaurants and cafes nearby. Just 2 blocs from Plaza Condesa which was great. Juan and Christian were fantastic, helped us with all our needs. We tip them as an extra, since service was excellent.
Regarding noises, I have a very light sleep, it was not a big deal. Its the normal noise level you have in buildings in Latin America. I even enjoyed it, since it reminded me of my home country Venezuela. If you are looking for a totally quite place, then you should consider a hotel or just turn on the heater (provided by them) on "fan" mode to cancel the possible noise.
The bed was pretty decent and comfortable. They provide extra blankets (I did not needed and I'm usually cold in CDMX). I slept very well.
They have a kitchen with basic (coffee machine, utensils, dinnerware and silverware) and 1-2 gallons of drinking water, which in Mexico City is a very nice touch.
I would stay there again!