We were able to check in an hour early with no problem. The apartment has a very good lay out with a big, open communal space and the two bedrooms nicely separated each with an en suite bath. The team provided 2 children's bikes for us which was extra nice. There's a Nespresso in the kitchen and we weren't sure about where to get pod refills, so they brought us some extras. We later figured out we could buy a different brand that worked in the Nespresso machine at the SuperRama a few steps away.
The hot water tank broke on our third day in DF and they offered to move us to another apartment immediately but were able to get it fixed within a couple hours. The location of the apartment is very good and centrally located for many things--easy walking distance to Parque Mexico and Espana as well as Chapultepec. A few very good restaurants within walking distance also.
We had our 3 year old and our friend's 8 year old with us and the hosts provided a high chair and small bed for our 3 year old. The apartment was good for kids with a few outdoor spaces and nice open spaces for play. We cooked in the apartment a good bit for breakfasts mostly and the cookware and place settings were of good quality and worked well for our needs. Great experience!