My wife and I stayed at Carolina Place in CDMX for almost a week. Carolina's place is centrally located in the neighborhood of Roma, with lots to do and easy access to other parts of the city, particularly if you're going to be using Uber.
Carolina wasn't on site to meet us, but she didn't need to be in order to be an excellent hostess! She made check in very easy and was on hand to answer any questions you might have remotely and check to make sure that we got in okay. She also checked in with us periodically throughout our trip make sure that things were going smoothly and to see if there was anything that she could do to help.
Overall, we really loved the area and after being there for a week felt like we were at home. We can't wait to go back to see more of La Ciudad de México, and would love to stay at Carolina's again!