hotels – Sleeping during a long layover during a travel ban

As a USA citizen, I am not allowed to enter Portugal (due to Covid-19 risk,
regardless of my apparent health).

But I have a 25 hour layover in Lisbon, so I am thinking to search the
international transfers area for a food court bench on which to sleep.
I doubt that I will get more than an hour of sleep, so lack of sleep
will probably make me sick.

Are there any better sleeping options?