Touring for business purpose

Any services related to Immovable property, the place of supply is location of Immovable property. Hence the person related to the Hotel cannot issue Tax Invoice with IGST. He has to issue Tax Invoice with CGST and SGST only. If you are having registration in the location of such Immovable Property (Hotel) i.e., in Himachal Pradesh you can avail Input Credit.

Yes he can claim 

No... He cannot claim ITC

Yes he can bcz expenses incurred for business purpose only and so he can claim ITC. As the question itself includes business purpose.

No you cannot take claim og gst paid on hotel bills as cgst/sgst will be charged to you. I one is  registered in the same place where hotel is situated, then it can claim the itc on taxes paid in that particular branch/ office.