Our stay on Caye Caulker was an amazing week, partly to do with the island itself, but also because Lucrecia and Luis have an amazing level of hospitality and helpfulness. Lucrecia is super responsive, ensured we knew about all the activities to do and places in town, both in advance and with daily recommendations. We followed all of her suggestions and were never disappointed. Lucrecia made sure everything was taken care of for us, from arranging transport to/from the airport and guesthouse, tours on the mainland, and provided a phone for easy communication. She also immediately answered all texts sent via the Airbnb app.
We stayed in the Hummingbird house, which is closest to the water and mangrove trees full of birds. Bring binoculars if you're a birder! There is a small kitchen (we never used except for morning coffee and easy breakfasts), a large and super clean bathroom (the entire place was well maintained and clean), and a bedroom upstairs with King bed and balcony with table and chairs to enjoy the mornings and evenings -- most likely the only time you'll be "home" with so many activities on land and sea.
One of the most enjoyable things was cruising around the island on the bikes provided! We took them everywhere.
The location is close to everything -- it's a small island -- but in a quiet part of the island, which is ideal since there does seem to be a fair amount of partying and noise in the main part of town.
I definitely recommend the Birdhouses and its location, especially for Lucrecia -- she is the sweetest, most informative, most gracious host I've had in all my Airbnb experiences.