"Where is the toilet? = トイレはどこですか。(or.おてあらいはどこですか。) "where is the bathroom?" = おふろはどこですか。(or おふろば / バスルームはどこですか。) They, "toilet and bathroom", don't mean the same in Japanese because many of the Japanese houses don't have them un one space. So we completely distinguish these two. I hope this helps you.