Stores/generates/syncs passwords very well, has extensive settings, doesn't get in my way when I don't want to use it, and doesn't pester me for a subscription.
It can feel a bit more clunky than competitors, since you have to add new logins manually, if you don't yet have a password for it, though I care little about that.
The only real problem I had with it is, that it very rarely freezes the browser. That might not be the extensions fault, hence I didn't deduct any stars.