I've been making low to no-budget films for the past several years, and as a result worked with some inexperienced crew. Sound was always pain to fix in post and ended up being cheaper to invest a little money up front than to fix in post.
The main character, Hannah bothered me the most. I think the actress was terribly miscast. I overall liked it a lot, but found myself having more sympathy for the supporting characters rather than for Hannah herself.