Ivonne's place was spacious and had lovely natural lighting. We were a little bit cold, but Ivonne offered us a portable heater to stay warm. The lack of ventilation in the bathroom created a lot of humidity, which caused problems for my asthma. I think if it were a shorter stay, or if there was a fan system, there wouldn't have been a problem!
Ivonne is very kind and accommodating - once the ventilation and heat systems are addressed, it will be a lovely place to spend a week in CdMX.