Who am I???

I am a big place. I have many tables and chairs. I have many doors and windows. Students usually come to me to access internet. I like myself because there are many officers to clean and care about me. I always give an comfortable for students because there is composure situation which can make them thinking and focusing.
Who am I? I can give many know ledges for people who come to me in Sanata Dharma. I have many rooms in which students can read, study, search, discuss, and anything else they need. I have many "loker" in which students usually put their bags in it. I can give students knowledge with anything else in here. Students can borrow which I have in here.
I know that you must know who I am. The key is books.