In Japan, most homes have automatic baths which set up the bath at a pre-set temperature and pre-set level. However twice I stayed at high priced hotels and the room bath was a manual bath like you commonly see in the western countries in private homes and its a real pain- difficult to set to a temperature and wasteful as they have in-bath drains which often drain when you get in because its set to 2/3 of the bath depth. Hence I ask if its standard to have make own baths in Japanese hotels? And why? My last stay was in resort in Okinawa- the most expensive hotel in the south of the island and the previous stay was in a ryokan in Kamogawa which is on the far side (to Tokyo) on the mainland.
Small clarification- the question is not whether Japanese hotels have baths or not or other bathing facilities (onsen etc.) but whether the bath that is present is an automatic fill up type as seen in nearly single Japanese home or the only way is turn knobs and try to fill it yourself.