We rented both floors of Casa Zama. It fit 12 of us perfectly. There is plenty of room, given the two living rooms and two kitchens.
It is a good location where you can swim right in front of the house. Water shoes were provided but if you don’t like sharing shoes, just bring your own. They are essential for water entry in front of the house. Unfortunately the kayak was broken.
The pool and pool deck are a little small but we made it work. Some small things about the house are getting old, but everything worked well. The only big problem we had was sand fleas in the pullout couch.
Overall we had a great time and the house was great for a big group.