Rafael is a wonderful host! He was very helpful with directions and suggestions for things to do and places to eat, and would regularly check in on me.
The apartment itself is very comfortable and charming. It's got everything you could ever need, is clean, and is so beautifully lit by natural sunlight.
The location is excellent and walking distance from the beautiful Chapultepec Park, the Chapultepec Castle, the museums of Anthropology and Modern Art as well as the Museo Tamayo. It's also close to the lovely Paseo de Reforma which makes for a lovely night time stroll. I used the CDMX metro extensively since the Sevilla stop is a two minutes walk from Rafael's place.
Just a small note for anyone with trouble sleeping: street noise makes its way into the bedroom at night and can make it difficult to get a full night's sleep. This was the only down side for me, but I'm used to dealing with insomnia so it wasn't too bad.
All in all: Great place and you couldn't ask for a better host than Rafael! I'll definitely stay at this place the next time I'm in the city.