While it's often regarded as the ugly red-headed step-child of Polanski's apartment trilogy, The Tenant isn't all bad. There are some genuine moments that will make your skin crawl. However, this is nothing compared to Rosemary's or Repulsion. I think Polanksi got off at the idea of staring in his own film, but didn't really give the script the depth it deserved. Great ideas go nowhere and leaves us thinking what-if?
A third kind of perspective on apartment-paranoia, as this time it is protagonist convincing himself of different reality. Least explained, scattering clues, motifs and subtopics that vary from homosexuality to Egyptology it is not hard to see why it didn't do well with critics at first. I see it as Polanski's most personal, exploring the depth of a paranoid mind left alone in a claustrophobic world of ignorance.