Velento Rentals (unit #3) has a "wow" factor indeed. The view from the balcony is amazing. It's literally like paradise on a private villa. The place was very modern and all the amenities are available. We ended up hanging out more at the Villa & not doing any tours since it was very relaxing to just chill at the Velento property.
The property managers - Don & Nazle are very accommodating. They are always there if you need anything. They responded right away to our messages. If you would also like some local Belize cuisine... Don is an awesome cook. He can basically make any local dish at a very affordable price & better than the restaurants.
Just a friendly tip for travelers new to Belize, Caye Caulker's beach in general is not a place to swim because of the seagrass. There are lots of tours available that can take you to spots with Sandy beaches or do other adventurous activities. You can also rent a bike to explore the island.

I highly recommend Velento Rentals. One of the best airbnbs I've ever booked.