GST Query

Hemant Kumar (Student CA Final) (74 Points)

14 September 2017  
I am the Registered Dealer under GST in Aligarh(UP).
I went to Kerala for business tour & hire a room for 2 days. The Hotel raised a bill with charging CGST & SGST in my name. I was also give them GSTIN of my firm.
place of supply was kerala & I am the dealer of Aligarh(UP) I.e. Interstate for Hotel(Kerala)
What should be actually Charge on this service(Room hire) CGST+SGST or IGST.
Please help