My mother’s step mom, my Grandma Gus, had a house in OC. My father’s parents had a house one mile away from Grandma Gus’. We (we being my brothers, my mom, sometimes dad and I) spent summer weekends at one Grandparents or the other and rented a house for two weeks when my dad took his vacation.
Summers were very good!
Aunt Sally, Uncle Jack, and cousins Johnny and Dex rented the first floor
Grandma and Grandpa lived on the second floor, Aunts and Uncles had guest rooms on the second floor.
Cousins, sometimes as many as 6 or 8, took-over the third floor.