The apartment is a thing of beauty. We loved the antique tiles, the brick wall, the wood - it was recently renovated with style, good taste, attention to detail. It is even better than pictures show, very bright and large.
Salvador is a great host, he responds to any questions super quickly. Unfortunately we didn't get a chance to meet him in person.
We had a little issue, and he responded even at 1 am, and promptly solved it in a satisfactory way.
The only caveat is that there is no heating system. I am sure most of the time it is not a problem, since Mexico City is a warm city, but we were there the first week of January, and it was really cold. That was a problem for us, because we like to hang our at home in the evening before dinner, and it was about 64F -18C at most. Not an issue for sleeping, since covers are provided.
Noise can be a bit of an issue. The construction site next door starts at 7.30 am. I sleep through anything, but my husband got an unwelcome early start every morning. I am sure Salvador can't wait for them to be done with this project!
Also, the terrace and big glass door/wall are awesome, but not soundproof at all. The upstairs neighbors where having a party when we arrived, and it was really just like being sat at their dinner table - we heard every word. We went out immediately to get away from that. Apart from that occasion, though, the neighbors were not loud, so it wasn't a big problem.
The location could not be better - Roma Norte is the coolest neighborhood. We had been there before, but it gets better every time. We tried a super cool new place, Blanco Colima - highly recommended. And a lovely breakfast place called Breakfast - so beautiful. Plus a million random taco places - you can't go wrong.
One night we went to Biko in Polanco - that was easy to do by cab, less then 15 minutes.
We went to Centro Historico every day by subway - just a block away, so fast and convenient.
Salvador allowed us to have a late check out, here we left at 10 am but left our bags there until 2 pm, like you do at hotels - much appreciated.
I would definitely stay there again, maybe avoiding the colder times of the year.