We had an overall fantastic stay at the Marina Bay Sands. Lina was able to upgrade us to the deluxe room which had some nicer amenities than the standard room. She also offered us an earlier check in than what was advertised. The check in process was easy enough but somewhat awkward as I met her near the MRT to be handed the room keys. I'm not sure what the inner workings are for Lina to be able to offer a room through AirBnB but aside from check in our stay was similar to friends who booked through the hotel. She was also very responsive via messaging. I would book with her again.