We don't recommend it. Cats can seem fine one day and be in real trouble the next, a stuck collar, a knocked-over water bowl, a sudden illness, and a few days between visits means nobody notices until it's possibly too late. Litter boxes also get unpleasant fast, especially with multiple cats.
On top of the safety side, cats are also creatures of habit who thrive on routine, and most really do miss their people. Daily visits mean your cat gets fresh food and water, along with the love, attention, and playtime they're used to, instead of feeling isolated or anxious while you're away.