The SPL has a quiet location and covered parking. The staff are knowledgable and friendly. There are plenty of tables, desks and chairs to read, work, study..etc. unfortunately two major drawbacks.
1. There are nice tables and desks but the 'matching wood' chairs are extremely uncomfortable after just 10-15 min.
2. The very private study rooms have NO internet access. So bring your own.
I recommend this library update to ergonomic chairs and expand their wifi to be of use in the study rooms.
For study needs, stick with comfy chairs and wifi everywhere at the Phoenix Public Library downtown.