I'm running a Nitecore TIP as my preferred hotel flashlight. Small, inexpensive, lightweight, and USB rechargeable, the low mode is one lumen. I put it on charge when I get out of bed and it's full up before I get in the shower.

Another great choice if you want something that runs readily-available batteries is the Thrunite Ti Titanium. It has a half-lumen Firefly mode.

There are other great choices.