The Lost Leaf has been one of my favorite bars to chill. The vibe is so quiet during the week days and it's a great place to meet for a first date. Especially from the internet because the lighting is dark and you may not notice if they are catfishing you or vice versa. The place is small though so, everyone might notice that you're having an awkward date.
I used to come in for the last Friday jam sessions. It was great to see lots of local musicians playing together. Every time I went the music was great. When I checked their calendar during the latest visit I found that those jam sessions are no longer scheduled. I found that to be a bummer because I was looking forward to schedule a trip to Phoenix just to see one again.
I still love this bar and will continue to patron when I'm in town. The bartenders are helpful and it looks like they have a large selection of local beers. Go there now!