The AC coaches were cleaned a couple of times last time I traveled, but the SL coaches were in bad shape. Many people are from Ayodhya Jn. Food orders are taken by vendors on the train, but the quality is not great. Sometimes, especially in Bengal, people selling idli come on the train, which is much better. Tickets are pretty easy to get on this train because the starting and ending stations are small. The train speed is slow due to various reasons, but the loco reversals are cool for train enthusiasts.

Yo, check out the catering deets from the journey:
Pic 1: Fish thali meal for ₹150 (day 1 dinner)
Pic 2: Fish thali meal for ₹150 + 50 for chicken curry (day 2 lunch)
Pic 3: Chicken pakoda for ₹60 (day 2 evening snack)
Pic 4: Egg Chowmin for ₹50 (day 2 evening snack)
Pic 5: Egg biryani for ₹100 (day 2 dinner)

Props to Sahil Kosireddy for the pics.

Safar ke dauraan catering services ki details available hain (Pantry services food information)
Pic 1: Fish thali meal ₹.150 (1st day dinner)
Pic 2: Fish thali meal ₹.150 + 50 for chicken curry (2nd day lunch)
Pic 3: Chicken pakoda ₹.60 (2nd day evening snacks)
Pic 4: Egg Chowmin ₹.50 (2nd day evening snacks)
Pic 5: Egg biryani ₹.100 (2nd day dinner)

Pic courtesy: Sahil Kosireddy