The phrase 'inside the cabin' is correct and can be used in written English.
For example, "We enjoyed the peaceful atmosphere inside the cabin."
INSIDE: The cabin was built in 1936.
Inside, the cabin was rank and flooded.
INSIDE: The cabin is structurally the same as the day it was built in 1947.
INSIDE: The cabin was built in 1984, using hand-cut locally harvested logs.
INSIDE: The cabin, built of pine milled about 15 miles away, was built in 2002.
INSIDE: The cabin is octagonal, centered on a living room with vaulted, skylighted ceilings.
Inside, the cabin is a fantasia of arcing lines and swooping dash vinyl.
INSIDE: The cabin consists of a main living room with a kitchen, bathroom and bedroom.
INSIDE: The cabin was built in 1950 and retains its original pine cabinetry, ceiling beams and walls.
Inside, the cabin is roomy and comfortable so long as you stay seated.
Inside, the cabin places strong emphasis on driver and passenger comfort, and makes liberal use of chrome, wood and glass.
