For the final sequence, the Sheraton-Universal Hotel was redressed to be the Hotel Rio Brasil. However, they forgot to remove the big doormat with the Sheraton logo on it at the hotel entrance. It can be clearly seen as Knotts walks in.
(at around 1h 13 mins) Just as the doctor is pronouncing Mr. Spaulding dead, Spaulding takes a very obvious deep breath. Also, his eyes are flickering and his wrist twitches. He doesn't make a very good dead man.