I watched this Polanski movie on saturday. And i loved it! This is real creepy and terrifying! Highly recommended!

I would rate it 89/100.

Here you have a review which pretty much sums it up from amazon.com:
Deliberately paced, ultimately gripping film about a seemingly nice, normal single man who moves into an apartment whose previous tenant, named Simone, committed suicide by jumping out the window. He meets her friend Stella (Isabelle Adjani) and finds himself unwittingly in the unfortunate girl's footsteps. Her brand of cigarettes, her favorite chocolate drink, her clothes and even her tooth (stuck in a hole in the wall) haunt him. No one seems to understand his concerns...least of all the difficult and bizarre tenants he's surrounded by who complain of his every move. He comes to believe it's a plot to drive him to suicide...like Simone. Roman Polanski (who co-wrote and also directed) is brilliant as Trelkovsky, the quiet tenant who's plunged into a nightmare that may or not be real. He's believable as an Everyman who suddenly finds himself alienated and in the grips of something he can't control. Is he going mad? Or is it...something else? Shelley Winters (as the concierge), Melvyn Douglas, Jo Van Fleet and Lila Kedrova as the other tenants contribute their considerable panache---making Trelkovsky's paranoic nightmare world even more sinister. A fascinating and haunting psychological journey that keeps you intrigued (and disturbed) right up until the final, bone-chilling scream. Not for every taste, but still "The Tenant" is pure cinema terror all the way.