If we were to design a vacation house for a family of four and then build it wherever we wanted, something like Brewer's Bay Beach House would be the result.
We felt like we had a private beach on the best bay on Tortola, with good places to swim (sandy areas), and good places to snorkel (reef areas). My wife and youngest son saw a huge lobster and sea turtle while snorkeling, while I got to swim with a small to medium-sized barracuda, schools of Caribbean reef squid, and many other beautifully colored fish of all sizes.
The villa is really perfect for a family of four, with both bedrooms being upstairs, a master suite with bathroom/shower and a second bedroom, with two comfortable twin beds with their own bathroom/shower. The second bedroom has a nice little library in the form of a tall bookcase with plenty to choose from. We read to our kids every night with books from the shelves, and even had to hit Amazon to buy the books so we could finish them at home!
Both bedrooms have AC units which are more than sufficient to keep cool at night. The living area and master bedroom have a very nice quad-screen/glass door set up, to get the best out of the priceless view and still hear the ocean without letting in too many bugs.
Judy, our host, arranged for a Taxi driver to pick us up upon arrival, arranged for our groceries to be waiting for us when we arrived (they weren't going to be there until the next day because I'd waited too late to order, but she worked some kind of magic), and found me a cake shop on the island which made a fantastic, surprise birthday cake for my wife. She was always timely in responding to our many questions we sent leading up to our trip.
This property and its host set an extremely high bar, in our opinion, that will be hard for another property to beat.
We look forward to returning some day!