You should let your local market determine what the rent for your room should be. Comparable Rents. The first strategy to do is to find comparable rentals in your area to set your price in a reasonable range or to figure out the going rate for a similar room.ut It on the Market. If there are no comparable rentals that you can find, you can just test out the market! If you aren’t in a hurry to rent the room, price it at the high end of what you think is reasonable and see if you get any nibbles. You can always bring the price down a bit to attract more interest.