Overall, this is a good option for large groups but be sure to read the fine print or you may be surprised. It's a bit overpriced for what you get.
The pros: This apartment is in a great location of Mexico City; we were within an easy and cheap 20-min Uber ride to most parts of town. Juan Pablo is an extremely communicative host and was quick to fix a broken shower. Having four separate rooms is great for groups and it was spotless when we arrived.
The cons: We did feel that the description was a bit misleading because two of the six rooms are outside on a roof. Not only that, but they are only accessible by a TINY, rickety, spiral staircase that is outside. If you're afraid of heights or over 200lb, you will not like this staircase. We were a group of five and ended up making due with the four rooms downstairs because we didn't want someone to sleep alone on a roof and we couldn't physically get luggage up the staircase safely. There are also three bathrooms but only two showers may be used at a time. The place is a bit older feeling/less nice than the photos imply. There is no couch or sitting area for large groups; only a kitchen and a wooden table and chairs.