Service tax on paying guest

I run a paying guest facility taken on rent to provide Paying Guest for working male and Female. Premise used for residential purpose. i would like to know if i am liable to pay service tax, if so then at what rate and if there are any exemption available. i provide accommodation for minimum 3/4 months. i charge rent on monthly basis of Rs. 6500/- to 8000/- per month but my annual turnover is above threshold of Rs.10,00,000/- please answer am i liable to service tax if so how much, is there any abatement available for me.