Yeah, if you like the exclusivity of it, I think Sentosa Cove is a great place to live in! My boss lives there and we've been there a few times. I have to say, it's a gorgeous place. Instead of cars, you see private yachts! Haha.
But personally, yeah. It is a little inconvenient because it's secluded inside Sentosa and guests have to pay just to get in..I guess it depends on what you're looking for