As everyone else has mentioned, this spot is perfect. The place is incredible. We spent a week there and barely left--between the pool, beach, staring at the ocean and the restaurant that is just a few steps away, we didn't need to leave!
Everything was super organized and everyone is super helpful. The place is beautiful. I was a bit worried about the size as we have two children with us, but the main area (with bed and couch) is very big and the second bedroom is comfortable as well. I am not sure we event spent any time on the couch though, as we were outside all of the time.
The outdoor kitchen is perfect for never leaving the pool and always being able to have an eye on kids (or not having to go very far to make another rum cocktail). The restaurant that is down the path is great, very accommodating and everyone loved the food.
It looks like there are plans to build a few more properties like this one, but for right now, it is the only one, so while there are always a few people, it feels like you have the beach all to yourself. The beach right in front of the house is great for floating--sandy with clear, calm water. Go over maybe 50 feet and there are few rocks that are good for snorkling.
The other restaurants that we tried around Nevis were all delicious and everyone we met was incredibly friendly and kept telling us what we should be doing while there. We didn't go visit anything else, although it seemed like there were quite a few things to do. We just swam and relaxed and spent time together.
This was the absolute perfect vacation spot for us, you will love it too!