I also often have problems with sleeping in a new bed the first night, but I find after that I settle in and start to sleep better. Make sure you try & stick to your usual sleep routine that you have at home - washing your teeth, pyjamas, maybe reading in bed, or listening to music, whatever helps you relax. Try & have your pillows and blankets the way you like them at home. Try to avoid looking at screens too close to bedtime. Maybe invest in some earplugs? I often find strange or unfamiliar noises in a new room can keep me awake, so earplugs can help that, and possibly also a sleep mask if you like the room dark, but there is light creeping in at the windows?
You could try some kind of sleep aid as well, just to jog you along a little the first few nights, Boots or any chemist will have a selection.