traveling by train and hotel checkins and back problems
 

i like traveling by train through germany, my problem with it is that i have to relieve my back by lying down every 3-4 hours.
I usually travel by train for about 3 hours in the morning, arrive at the destination of the day's stage and then have to bridge the time until hotel check-in.
sometimes i find a cheap spa or get an early check-in so i can lie down.
i don't want to solve the problem with morphine patches.
my question is whether anyone knows another solution?