I saw this movie back in 2006. It could have been released before that date. I think it is a British movie (not Hollywood). Colored.
The one scene I remember is a lady (prostitute) walking out of the hotel lobby heading to the exit. She talks to the staff to tell him something like:
There is something wrong with the toilet in room #XYZ
I am not sure if she mentions a room number or not, but in case she did, I can't remember the number. I used XYZ as an example.
The staff asks here something about her identity or why she was there and she answers something like:
I am not supposed to exist
Then the guy goes to the room and finds the toilet blocked by a human organ (maybe a heart, or kidney).
Later in the movie, we learn that the room was used as an operation room to remove organs from a man, who later is shown very sick. I am not sure if he dies or not.