Answer:
This is called timeshare since the property does not belong to it as if they are buying a property with more people, in this case they rented in summer, then the house is available in summer for the next eight years, but finishing the summer the house can already belong to other staff in the same way for a certain time
The timeshare regime consists in the provision of the right to use and enjoy a property (also called multipurpose), usually some type of holiday accommodation, during a certain period in the contract.
Hard to judge without the context of the other sentences of the story but if I had to guess, it sounds "inviting and familiar" to me.
Chapter 2 summary:
After coming back from Connecticut, Mitty had tons of homework, not to mention, ten pages of notes. At school the next day, his friend Derek, goes on and on about the anthrax murders. After school, Mitty starts on his notes, but decides to skip to his rough draft instead. Mitty continued to read about smallpox, everything happening to the people he is reading about could be happening to him too