GST on hotel rooms

dear experts,

we are in hotel industry,
where we are providing lodging and boarding service, we also have restaurant in ground floor,

we are paying GST on room rent as per slabs like 12% for upto 7500 and 18% above 7500,

and paying GST @ 5% on restaurant service.

we providing food in rooms also so what gst rate to be charged when food is provided in rooms??
weather it is as per room rent (12% or 18%)
or its at 5% bcz of food rate is 5%.?

also how can we claim ITC on this supply.

kindly reply

thanks