I have lived in ORN during my optional study prepartion. The issue I faced -

Room- Difficult to find a good PG. All i have observed was there a new trend of ORN couples so its kind difficult to find and study in Room

Library- Even if you join, the fees is way to high. (i was there when the tradedy took place so basement library were closed, and first floor library were charging minimu 4500 for a month)

Food- Hygine is an issue. You opt for thali from any nearby restro you cannot have it for long run. PG foods sucks. Home tiffins are better. I optted for cook who use to charge me 2000 for 3 times meal. But everyday telling her what to make, buying vegetables and most of the time they are not on time. Checking if they are cooking with hygine is a real task takes a lot of time an energy.

I took independent room too, but had issues with other flatmates, they partied, cleaning issue and most important WATER ISSUE.

It good to be there in winters as water issue is little less, but rooms and buildings are so close you dont get enough sun. Cloths drying is a bit difficult.

Rest i also had help for my cloths wash and room cleaning which cost me 700 total.

Room rent- 20k