Casa Vista Belize is an incredible value and provided the perfect space to celebrate my 40th with friends and family! The location is just as described--on the north side of Caye Caulker so it provides an off-the-beaten-path feeling (exactly what we were seeking), but it's also a breeze to utilize the house boat/captain (we loved Lambert and Thelma) or grab the house bikes and zip to Koko King (where you can grab a drink and then hop on their boat shuttle) to cross the split.
Brittany and Woody helped us arrange a private snorkeling tour...AND took care of rescheduling it when half our group arrived a day late due to delayed flights. They also set us up with a great driver (Norman) on the mainland who helped arrange a few different tours for different people in my group. There are so many great options in Belize--having local help making reservations and setting up transport was a huge bonus.
The house was perfect for our needs--enough space for people to spread out but also options for enjoying dinner and drinks together. I loved that everyone in the group had options to do as they pleased--go, go, go on excursions; take it easy with the house hammocks, pool, and decks; leisurely explore Caye Caulker; or indulge in any combination of the above.
We did experience some communication issues that were frustrating. I think there were some growing pains due to recent staff changes that caused a few minor hiccups, but I would absolutely recommend Casa Vista Belize to anyone, and I would definitely stay here again to accommodate a large group. The location (if you know what you're getting into as we did!), staff personalities, and overall vibe of the house are all five stars.