Probably out of all the properties on Koh Ngai/Hai is the the best as terms of facilities, grounds, beach location, charm, food, etc. Do know you are on an island, no town, no roads, etc. Only three groups of people you will see: Tourists, Hotel?restaurant staff and boat drivers. There are no hawkers, or local villagers, etc. Just basically you. With that in mind they have to bring everything by boat in so prices are higher than mainland.
It truly is a relaxing, chill location. Very safe.