Here in Ecuador, we normally say "servicio" to go to the toilet.

In Spain, you could say "servicio" o "baño" to refer the bathroom. However, if you want to allude the toilet as an object, you could say "váter" or maybe "retrete". Moving on, I'm looking for an English partner, we could do an exchange Spanish-English if you are intereted. We could chat everyday and make video calls somentimes. Cheers !

We normally say “baño”