Kolkata Metro: The only Metro of IR. কলকাতা মেট্রো : তিলোত্তমার জীবন রেখা ।। - PPG

The list of accomodation facilities and the per day Rate chart provided & managed by TTD in Tirupathi (Not Thirumala) are as per the pic.
Facilities:
1. Srinivasam - Infront of the APSRTC Bus stand on the Alipiri Bypass road
2. Madhavam - Beside Srinivasm
3....
more...

Vishnu Nivasam - Infront of the Railway station.
Process to book:
You have to go to the respective facility and stand in the Q. You would be alloted the rooms per your turn in the Q and per the avaialblity.
Same Q for all types of rooms.
So whenever a higher priced room (A/C, SC Deluxe) is vacated, they would announce it in the Q. You can go claim the higher priced room if none infront of you are claiming it.