In Japan, onsen (温泉) are hot springs and the bathing facilities and traditional inns around them. Onsen may be either outdoor baths (露天風呂 or 野天風呂, roten-buro / noten-buro) or indoor baths (内湯, uchiyu). This LORA for Flux aims to produce both as accurately as possible. Use the following keywords with accurate descriptors on your prompt ro get good results -

Onsen, Japanese_Bath