Service tax on dharmasala (guest house)

My client is chairperson of Dharamsala (Guest House) whch is registered under Sociry Act.

THe dharamsala consist of 15-20 rooms and 1 party hall.

The rent of room is below Rs.1000/-

Query is that in case of bulk booking he is providing Whole dharamsala @ say 20000/- bugs fr a day.(toatal rooms and party hall)

Now Whether he is covered under ST laws.

If yes then what r the remedies to help him out?