Check any hotel you stay in. Look under the mattress and in crevasses and seams. And don’t put your suitcase on the bed. Use the luggage stand or a desk.
And even if you check carefully, put your clothes straight from the suitcase and into the dryer and run for 60 minutes on high. The heat will kill bedbugs. If you can, also heat the suitcase or keep it sealed in plastic.
Also, protect your stuff. Put your mattress in a zippered encasement.