Going back to the lost girls book where DS was painted to be this big lovable teddy bear who got sucked into this this dark world, it's seemed like being protective was his nature. Then again, that's all based on his words. What makes you feel he isn't being truthful?
Either way I do remember that about Amber going to that same hotel. I don't think it's because they're related, I think it's more due to the ease of finding the hotel. It's visible from the expressway which is one of the main highways Long Island has. The rates at that specific one may have been cheaper too. I'm not really sure.