Turtleback Hideaway is an excellent place to stay. Claudia is a kind and helpful host. Chef Juan's cooks amazing food and is just outside. I would recommend this place to anyone staying on Caye Caulker. The only downside like other reviews mention are the nearby hostels can be a bit loud later at night, but it is not that big of an inconvenience.
Overall I had a great time and spent a lot of time at Turtleback Hideaway 10/10.