Staff at the hotel in the Saône and Loire region found the guns and papers in sealed plastic bags by the bins outside after two guests, thought to be part of members of Basque terror group ETA, were arrested.
One member of staff told news agency AFP the bags were found about a quarter of an hour after the police had left the hotel.
“I contacted the police straight away and they told me to take the bags back inside the establishment until they came to collect them,” the hotel employee added.
Spare ammunition for the weapons and clothing belonging to those arrested were also found in the sealed bags.
Izaskun Lesaka Argüelles and Joseba Iturbide were both arrested at the hotel early Sunday morning, and are both presumed to be part of ETA.