Highly recommended, Mau's place is as beautiful as the photos suggest, and the furnishings throughout are incredibly comfortable, you won't want to get out of the bed, and it even has a lazy chair you also won't want to leave. The kitchen is extremely well equipped including an espresso machine with latte making facility, the flat is spacious and has a great TV in the lounge.
Great location close to (but not too close!) to Reforma, a park just in front with a great sunday art market. I prefer this location to being right in la Roma which for me now has just become too over-run with tourists, and prices have risen to match. San Rafael across the park from here in the opposite direction from la Reforma is a really nice area, plenty of good eating options nearby, near centro/la roma/condesa/juarez.
I met Mau on check in and he was very welcoming, and his communication throughout was great. Highly recommended!