There is a lot to like about this apartment. It is cozy, comfortable, clean, well-furnished and in a great location. Perfect base for walking to many interesting places, taking Metrobus or Metro for farther destinations. The only drawback is that it is on a busy street, with street noise lasting well into the night - however, it is on the 5th floor (6th in the US), and for light sleepers a pair of ear plugs can take care of that. As other guests commented, the tankless water heater is a bit tricky, especially for Americans. Thankfully, we had one of those in our apartment in Europe, so we quickly learned how to use it. Perhaps detailed instructions (or a video) would help perplexed guests in the future? To make matters worse, the current fashion in the fixtures industry is to not provide any visible marks as to where to expect hot water. (Left turn? Right turn?) It drives me nuts, but is, of course, out of our control.
The hosts (Alice in particular) were very attentive and accommodating. All our questions were answered very quickly, and whenever we needed something, it would appear the next day. Regrettably, we did not meet them, but we spent most of every day exploring their fascinating city, with no time left for social calls. I can truly say that the hosts and their apartment contributed to our falling in love with Mexico City. It was our first visit, but I am sure it won't be the last.