There is a lot of similarities between The Joker and Do Not Disturb. Colors, lightnings, angles ect. Ect. Both films have the subject of a "stage of insanity." Also, this film got a reference to the character "Joker" in a scene where Ayzek and the girl when they smoke in front of the hotel. So it is no secret. But if we say this is a bad Joker copycat it could be unfair.
The details about the "hotel business" is insanely correct. Ayzek getting the wrong name tag at the first scene, being a bad hotel's night manager makes him smoke so often, no one is coming for check-in ect. Everything you see about the hotel business is very correct.
Characters felt very real and I like the scenario.
Only problem about the film is, it really doesn't feed the expectations with that final and I was expecting something big at the end. My suggestion, if the final is going to be the worst part of the film, don't try to make one.
Also what was the part about Ayzek felt down to that car? If it was Davut's room, what did we see? I think it's not connected to somewhere that is a problem, because you gave so much clue but there is no puzzle.
In total it could be one of the best films ever made in Turkish cinema but it could be better and if someone going to do that, who could be better than Cem Yilmaz?
If there is more given, than more expected.