Since Filou and Tigris live here I went for foreign countries for 3 weeks every year. One or 2 years we even went for 4. The cleaner comes once a day for an hour for feeding, cleaning litterboxes and playing, our neighbors come a second time for feeding and playing. When we stay longer than 3 weeks, we see that someone (my parents or a friend) is in the apartment here.

They are perfectly happy together, don't have to change places, and it's less expensive than a kennel would be.