It's going to sound crazy but after reading your comment about not wanting gore, the perfect movie might be the Texas Chainsaw Massacre (original.) It's just super creepy throughout but with impressively little gore etc.
Last Night in Soho is a mishmash of films but gorgeously shot with a sense of style, in some ways a love/hate letter to London in the 60s.
And finally, a weird one that I really dug, It Ends. It's not at all like anything else. I saw it called a hang out horror which is as good a description as any.