This is the 2810th most frequent Polish word.
kamer
"Kamer" is not a Polish word.
Here, 'kamer' (plural form: kamery) refers to 'cameras', devices used for capturing images or videos.
W moim domu mamy trzy małe kamery.
In my house, we have three small cameras.
In this sentence, 'kameralny' (derived from 'kamer') means 'cozy' or 'intimate', describing a property of the cottage.
Podczas wakacji wynajęliśmy kameralny domek w górach.
During the vacation, we rented a cozy cottage in the mountains.
Here, 'kameralna' describes an atmosphere of intimacy or coziness of the hall.