.... The hotel reception may ask you to cancel your booking and then they will give you the same room at a slight discount.
Funny you mentioned that Willy. When I wanted to up-grade to VIP level (Happy Hour was included) from regular room, they would/could not do it at the Desk. They made me get on a PC and re-do it from there myself. Thought that was strange, I'm right there and they said NO. If Reservations made on line, they will not touch it.