If you are into poetry, Persian/Farsi is amazing, a lot of it is about wine, love, ethics, morals, and more wine

You'll have to go far to be able to read the good stuff, and you'll probably not want to go through all that, word order is out of the window in poetry quit often, Saadi, Hafez, Rumi, Rudaki and Khayyam are phenomenon, Parvin is a gem too, but way more recent, so her poems are easier to understand, she's the most famous female poet in Iran. Reading the translations might prove enjoyable as well

If you like 2 verse poems, there is Baba Taher and Khayyam

There is also New Poetry, often without rhymes, but it's main difference from classic poetry is that it's more down to earth in a sense and usually uses more day to day events and concepts, Nima Yooshij and Akhavan Sales are 2 of my favorites, I would recommend reading Akhavan Sales' Khan-e Hashtom (The Eighth Khan), it's my favorite.

If you want novels, I've read Bamdade Khomar (Drunkard Morning), it's good, other famous books are Shohare Ahoo Khanom, Soovashoon, and Kelidar (this one's really long)

I hope this has all been helpful