Lot more cheaper & better options present than RTDC. After exiting the station through PF 1 side, you will find hotels, cheap as well as budget. Check out those. Or else, on an e-rickshaw, pay rs 10 & go to Sindhi Camp (Main bus stand of Jaipur) (just 10 mins walking distance from station). Many hotels as are present there too.
Or you can try IRCTC dormitory on 1st floor of PF 1 too. Good enough private cubicle with a door. Don't take rooms here though, you'll get better outside in similar or less price.