How to say “I think the library is better. That's because it's quiet. Besides, there are lots of books.” in Japanese
In Japanese
図書館のほうがいいと思います。なぜなら、静かだからです。それに、本がたくさんあるからです。
Toshokan no hō ga ii to omoimasu. Naze nara, shizuka da kara desu. Sore ni, hon ga takusan aru kara desu.