Yeah, it generally costs more but extended stay places and suites are fairly common. I sometimes rent them though I don't generally use anything beyond a refrigerator. AirBnB (and VRBO etc.) do tend to win when the objective is to rent an entire house.

They do, but they don't generally have living rooms separate from the sleeping rooms. When I had little kids, and they went to bed at 8pm or got up at 5am, having segregation between the sleeping and non-sleeping family members was great. AirBNB gave you that, plus the kitchen without having to pay 2X for two rooms. It's also a lot more comfortable to set on a couch than on a bed, or the tiny desks you get in hotel rooms with kitchenettes.

AirBNBs are also broadly available, with lots of selection. There may be hotels with the amenities you want, but they are rare, and are less likely to be in the part of town you want to be in, near your family or friends, etc.

It's not that common outside the US in my experience, and the kitchenettes are barely usable.