"Where is the bathroom?"
Translation:Hol van a mosdó?
I don't know the current toilet-only vs combined bathroom ratio in Hungary, but there is a good chance that you will find both versions.
I guess it will have to be made clear in the context. When you ask this question in a restaurant, there is a good chance you are not talking about taking a shower. Also, whoever answers this question will probably explain the situation if the facilities are at separate locations.