We were just there yesterday and had Cabana 20. The bathrooms are really close and convenient, and it just takes a minute to call a golf cart to take you anywhere, and if you go to Cookies too, they will wait for you to take you and your food back to your cabana.
I am going to list the downsides, but want to stress we had a great time, and would do it again, we would prefer a cabana in the 14-17 range, but would do 18-20 if that is all that is left.
1.18-21 are all very close, no privacy, The people in the cabanas around us were all really nice, so it wasnt an issue for us.
2.The beach chairs, umbrellas, hammock for 18-21 are all next to each other since the beach area is really small
3.since the beach area is small, the umbrellas, chairs that go with each of the 18-21 cabanas are misaligned with the actual cabana, so when you look out of your cabana, the people in the chairs are really the people from one cabana over.
4.the swimming area, was deep and nice, but not as white sandy as the other area. there was a lot of vegetation on the bottom.
5.Biggest issue were the Jelly fish, everything was fine for most of the day, but around 3pm the tides got real low, and everyone was getting stung.