Where does “шалашка” come from?

шалашка (Russian) comes from Russian шала́ш, from Hungarian szállás, from Hungarian -ás — Added to a verb to form a noun.

шалашка (Russian): hovel

Definitions

Step	Language	Word	Meaning
1	Russian	шала́ш	—
2	Hungarian	szállás	housing, accommodation, living quarters, lodging,...
3	Hungarian	-ás	Added to a verb to form a noun

шалашка — Etymology, Origin & Word History | Etymology Explorer