Mud daubers usually construct tube-shaped or rounded mud chambers where they place captured spiders as food for their developing larvae. Unlike more aggressive social wasps, they generally do not defend their nests in large groups and are usually not interested in attacking people.
A nest inside a hotel room likely means the wasp found its way indoors through an open window, door, vent, or small gap and discovered a sheltered place to build. The structure itself is an impressive example of insect behavior, but guests should still avoid touching or breaking it open.
If you discover one, notify hotel staff so it can be removed safely and the entry point can be checked. Mud daubers are generally considered low-risk compared with many other wasps, but giving any unfamiliar nest space and letting professionals handle it is the safest approach.
