S.W.
Maybe you could bring with you a new sponge mattress pad that will help with the metal. My son had two of them on the bed that he has at home due to an accident that made him have to sleep in the livingroom (couldn't climb steps with broken legs).
It's only for two nights. If the mattress is too much how about a pillow?
Congrats on the birth may it be safe and quick.
The other S.