I used to live there actually. I lived near Secret Harbour. It does have a dive operation located there and it is a beautiful place. You aren't a great distance from Red Hook on the East End of the island and there are lots of little neat shops there as well as the marina and the ferry to St. John. Coki Beach is nice as well. One thing I would do definitely. The day and time may have changed but when I was there, on Tuesday night after I think it was 7PM, the cable car ride located near Yacht Haven Marina downtown was free to get to the top of the mountain. There's a restaurant up there and it's a great view of Charlotte Amalie Harbour. I would definitely recommend taking a trip over to St. John for a day. It is definitely a gorgeous place to go. It's about 75% national park and has the most beautiful beaches. Also a great place to go on St. Thomas is Magens Bay. It is on the north side of the island. It's a beautiful beach and if you look up to your left from the beach you can see where I used to live.
If you drive onto the peninsula on the right side of Magens Bay Beach to a place called Peterborg and drive to the end of the peninsula, you will find a huge area of boulders and in the middle of some of those boulders is a nature-made small swimming hole. It was made from the waves crashing over the rocks and dripping down to fill the hole. It's about 10 feet deep but watch the sides for sea urchins...I learned that the hard way. Let me know if there's anything else you wanna know and I'll try to help. I'm very jealous...I absolutely loved living there and look forward to going back. Take care!!
