It should be. I reported it.

"Is there a bathroom here?" in Chinese is "有洗手间这里吗?" or using the alternative way of asking "有没有洗手间这里?"

"Is there a bathroom here" implies you don't know if there is one. "Is the bathroom here" implies you know there is a bathroom somewhere around but you want to verify its location.

Either way, they should accept both.

I don't usually rest in the wash/bathroom.

From what I've read in this forum and other webs, it seems like a regional/dialect difference, but mean the same.

You need "excuse me".