On the top of the places what you can imagine for studying is National Technical Library. It is new interesting building built in 2008 in Dejvice (worth to even just for visit). Since then the library is being a magnet for student who want to get in study mood. There is much of common study area, study rooms and comfy couches. You can even rent a personal study room or whole classroom. There is free access to anybody you just need to have your student card or collect one day entrance pass in the hall. And if you become a member for small amount of money you can use internet and computers and borrow books to home.