And I pretty regularly stay, for roughly the same price, at "extended stay" hotels (where I am not staying for an extended stay) with a kitchen, albeit a small one.

Ditto. I don't usually use anything except the refrigerator--and even many "regular" hotels these days seem to have emptied the minibar and left the mini-fridge--but they usually also have sofas, etc. and generally room to stretch out. I often find it preferable to usual hotel amenities that I mostly don't use.