Weak Aspects of the Film
The portrayal of all men as scheming, misogynistic adulterers is a bit over the top--at least as off-putting as the portrayal of women as ditzes and fragile flowers.
I also think the basic plot contrivance--executives using this guy's apartment for their dalliances--doesn't really make sense: They're executives. Can't they rent a hotel room?
The suicide recovery scene I find tedious and dull. The vomiting, face-slapping, coffee drinking, etc. got pretty old. Add to that the histrionic mensch doctor and Lemmon's exaggerated acting and I felt like skipping forward.
I think the best scene is the very last. The two characters share a genuine and wonderful smile. And Shirley Maclaine is beautiful.
Overall, a good film with some weak aspects in terms of plot and script.