horrible experience
On the 3rd day of our stay (I paid for the room for my friends' stay in NYC), upon return in the afternoon, I discovered that a shopping bag full of stuff were missing. I called security immediately and a lady was sent to take down information. She called the same night and said the report was filed and so far they could not locate the bag. She promised to call back the 2nd day but did not. I went into the hotel to ask for a solution later, and a series of nightmares just began. The "original" report had the number of items wrong (I said 2A, 1D; the report said "1A, 2D" etc.); the security dept repeatedly refused to identify the staff that went into my room; the security refused to talk about what info they found out with their staff. And how about surveillance camera - there is no footage to go through?
I am not accusing anyone of misappropriation, my basic logic was: if the stuff were removed accidentally, since when staff could judge "what are personal belongs of guests, what are not". It is an individual HOTEL ROOM, anyone other than the guests SHOULD TOUCH NOTHING except for removing trash!!! I wanted to find out who removed my stuff, while 2-day-old empty bottles were carefully NOT removed from the room.
The customer service was horrible.
I have stayed at many hotels around the world, and I understand the importance of watching out for your personal belongings - what annoyed me was not that the final compensation cannot fully recover my loss, but the hotel doesn't step out and say: we will use all the resources to find out who removed your belongings and we will apologize properly for the inconvenience. 
This is a big lesson for me; I hope it can be help to you too.