We loved our stayat Marilu's appt. The location feels very safe, but much more authentically Mexico than Condessa or Polanco. Everything you need within a short walk (restaurants, supermarkets, gyms, and even a WeWork!).
Internet was fast, though the extender that gets you internet to the room isn't as fast as the main router (standard), the apartment was MUCH quieter than others we've stayed at and there was plenty of hot water, and water pressure (not a given in Mexico!).
Also, we love that there were trees right outside of the balcony so we felt like we were in nature while being close to everything!
Finally, we had some food poisoning when we were meant to checkout and they w were so kind to let us check out late.
I definitely recommend!