Airbnb's age categories for children are absurd and must have been formulated by childless people. No parent would ever refer to their 2 year old as an infant unless it meant they didn't have to pay for them.
An infant is a babe in arms who can't make a mess or do any damage on their own, not a walking, talking toddler. Age categories should be birth to walking, walking to 5, and 6-12.
No listing is unsuitable for a baby that does nothing but sleep, eat, fill their diaper and look around at things. But there's plenty of places that are unsuitable for a rambunctious toddler.