The place is worth exactly what it costs. it is conveniently located close to the metro, though a 20 min walk from actual Coyoacán. I would not recommend more than 2 people as the place is quite small (not that I'm complaining) But unless you're using it solely to sleep while touristing around, it's best for 2, and it's quite intimate.
The best feature I have to say is the roof garden, big and clean. The floors are quite noisy (hollow good) so those with light sleep may be bothered by the sound of neighbors walking around (Though this didn't bother me at all!)
I'd suggest only 2 things: a TV with streaming services and a fan. other than that, price-quality you get a good bang for your buck.