The phrase "bathroom amenities" refers to the supplies or items that are provided in a bathroom for guests to use. These may include things like soap, shampoo, towels, and toilet paper. Full definition
The en - suite bathroom includes a Spa Bath along with a separate indoor / outdoor rain shower along with luxury bathroom amenities on arrival. (cairnsaccommodation.com)
The bathroom was also tidy provided with bathroom amenities. (marxtermind.com)
They also provided extra bathroom amenities — very thoughtful of them to do so without asking! (travelcodex.com)