My wife and I stayed here for just under a month, and had a wonderful time. Checking in, Lisa provided instructions for an easy to walk to the place, but had her property manager Andy meet us at the ferry dock and give us a lift. Early on, we needed a few kitchen items to better utilize the amenities, but despite the fact that Lisa was traveling at the time, she and Andy got it resolved within a few hours.
The space itself is cozy, but despite the humidity and 85 degree winter highs, the location and construction of the place allows for near constant air circulation. We didn't use the AC once, but it might be necessary in summer. The bed was comfy, and the space felt private despite being attached to another unit. The views across the channel to St Thomas were gorgeous, and not pictured is a recently-constructed deck also overlooking the channel. It's a fairly short walk to Honeymoon Beach, with a restaurant and bar in one corner of the bay, and frequent sightings of sea turtles in the late afternoons.
Aside from some mosquito's getting in, I don't have anything bad to say about the place itself. However, staying on Water Island does pose some logistical challenges. I'd recommend getting a provisioning company to stock the fridge before arriving, as there are no grocery stores on the island. Excursions to other islands require some planning, as the ferry runs are limited and water taxis may not be available.
All in all, we can't imagine a better place to have honeymooned.