It's a lovely physical facility with a very large selection of books. I'm enjoying physical books, plus ebooks (wow, download from amazon.com and use Kindle to read), audiobooks, etc. available through their e-sharing library. The checkout/return process is thoroughly modern, as is the way you can put a hold request on a book and be notified via email or by text that the book is available and waiting for you to pick up. Bathroom (men's) is generally clean, given the fact that a lot of street people come here. Security does frequent walk-throughs around the premises, so the street sharks don't get an opportunity to be disruptive or use the Library as a crash pad (i.e., sleep place) for the day. It's generally been very quiet when I've visited.
There are many interesting activities scheduled, including coloring for grownups. I like the artwork displayed on the walls. I've not yet tried the coffee bar, but it always smells alluring and the prices are decent. The Library is easily accessible by Valley Metro route 72 or a Tempe shuttle bus if you take public transit.
I'm withholding two stars for the slower-than-molasses WiFi. I thought Mesa Public Library was the worst in the area, with download/upload speeds around 1Mbps [speedtest.net]. At Tempe Public Library, I just got a download speed that struggled to top out at 3 Mbps and upload speed of 0.5 Mbps [speedtest.net]. Simple web pages on news sites take 3-4 minutes to load completely or they time out, embedded videos are mostly unplayable, and you can forget using Spotify or TIDAL. Spotify reports it's offline (due to abnormally low bandwidth), and the same goes for TIDAL. The lack of serviceable WiFi is a big deal to me, since I have to use it for non-frivolous reasons that require decent bandwidth. No, it's not my computer. Up your broadband game, TPL!
For decent WiFi coverage in a publicly-accessible library in Phoenix, you'll have to stick with Phoenix Public Library locations (10 Mbps up/down or sometimes, much better) or ASU libraries (guests capped at 10 Mbps up/down but rock solid).