This place is absolutely WONDERFUL. So many cute and thoughtful touches with EVERYTHING a person and/or couple could need for a comfy stay. You really get the sense that Andrés and Francisco want you to have a memorable and comfy time in CDMX.
My main criticism is the key situation. You're responsible for a set of four keys: one for the apartment door, one of the gate outside of the apt door, and then two more to enter the building and the rooftop door where the apartment is located (this door was often open, so I only used the key like once or twice). Needless to say. It's a lot of keys! Especially if you're used to having a keyless entry for Airbnbs. Thankfully, the set is clearly marked, so it becomes second nature to use them pretty quickly, but it just felt slightly tedious and somewhat stressful (i.e. what if, worse case scenario, I forgot the keys? Or locked myself out? What would I do??? I imagine they would make themselves available to help you. But do you see what I mean? When it's a keypad entry it's not something you need to worry about). Also, trying to lock them in the lock box at the end of my stay felt like a hassle. It wasn't easy to close and secure the box. It took a good five minutes to finally snap the box shut. So make sure you set aside time to do that when you're checking out.
Do not let this key situation detract from the experience though! BOOK THIS PLACE if it's available. I'd honestly still give it a 6/5 stars. It was really that cute and comfy.