you finish more quest and/or succesfully seduce more guys. sometimes the reward can be "you unlock more upgrade for the bathhouse". then in the bathhouse you can think of upgrade to unlock the corresponding room. after that you can choose the room to use in renovation
Hey thanks for the replies.
But I already have access to the rooms (like the sauna and the bath) but I don't know how to get the version where the men are active together.
Like they are in the images that DanDake shared in his post.
