You could ask "¿Dónde está el baño?". There are many other terms for "bathroom", but this one is pretty universal.
'Bathroom' in Spanish is 'bano' (there is a tilde above the 'n').
The words for bathroom in Spanish are: El baño or Cuarto de baño.
"Baño"
banos
¿Puedo ir al baño? in Spanish is "May I go to the bathroom?" in English.
u can ask the teacher to go to the bathroom and take the test in the bathroom
Bathroom in Spanish is "el baño."
en el baño
cuarto de bano
To say 'He is going to the bathroom' you would say 'Va al baño.'
In spanish: Donde esta su bano?
donde está el baño