Service tax on hostel rent collected

Hi all,

An building has been taken for rent and used to render hostel services to students and working womens. And mess service also provied to everyone. Monthly fixed trafiff has been collected which is inclusive of mess charges.

My question is whether Service tax will applicable for the same if the gross receipt exceeds threshold limit of 10 lakshs??

Or can we avail exemption as let of for residintial purpose of the individuals and come out of Service tax liablity??

Thanks in advance