This movie is sort of like Psycho (1960) on acid.
Yes, like Psycho with the murderous hotel owner and two people looking for a missing woman but way more bizarre, sleazy, and with a killer crocodile thrown in. I agree with you.
It's like a cross between 'Psycho' and 'Jaws'. It obvious that Steven Speilberg saw this film before making 'Jaws'.
This movie came out after "Jaws."