I can't sleep!

Give me a 5 star hotel bedroom with the fluffiest bed but still I will NOT be able to sleep well. So it doesn't matter if you're giving me a 2 star hotel holiday or even a 7 star rated bedroom, my very own mattress is still the best. I've problem sleeping even if I changed the location of my bed in my very own room. How many days do I need to get use to a new bed or location? At least 7 days! Strange isn't it? I love to travel but I've problem sleeping!