We have stayed at Under the Sun's "Jellyfish" cottage twice so far and have loved it both times. It is owned and operated by a local family. They are some of the kindest and most honest and down to earth people you will ever meet and embody the spirit of what makes this place so special (people are still really kind and courteous here - it's like time traveling).
We like to do DIY fishing trips and this outfit is perfect for that. It is extremely economical and they also rent great boats that suit our mixed needs.
For those wanting a bit more of a guided experience doing something super cool - they can connect you with great affordable deep sea fishing trips (winter Wahoo fishing is phenomenal - even the DIY bonefisher, you should plan a day for that...).
The comms are always prompt and helpful, and they are always kind, professional, and seem to really care that you have a great time on the island.
The cottage doesn't have the view of the more expensive houses, but it's clean, comfy, and very functional and you'll have plenty of views as you explore the island each day.
We typically stay at the Jellyfish cottage for part of our trip and spend a few days at various places on the other side to mix things up.
While there (if you have a some boating experience), be sure to rent one of their boats and explore the area west or northwest of the cottage. It's the best DIY bonefish spot I've found, and a quick google earth search will show why...