Loved this place. Our second time in CDMX and although we were by a main street it was very quiet compared to our last place at Roma. Place was beautiful and minimal. Bedroom was perfectly dark at night but happy I brought an eyemask for when I had to walk to bathroom. The rest of the apartment gets very bright! AC only in bedroom but it was Fall weather so I didn't mind. And if you have a hard time walking up stairs this might not be a good option, but walking up to third floor was our extra exercise that we needed, so we didn't mind. Also started chatting to neighbor who's been staying there for a month and he was super in love with his apartment too. There was no CO2 alarm, and no gas stove, but hopefully they will put one in soon just in case. Will definitely trust Casai for future stays in CDMX. Thank you!