Have you ever seen, or used, an "executive washroom"?

The idea of an exclusive “executive washroom,” accessed only with a special key, has been mentioned in countless movies and TV shows. Do such restricted, luxurious places really exist?

Separate facilities for students and teachers, found in just about every school, don’t count. Neither do private bathrooms connected to key employees’ offices.

I’m asking about a shared restroom in an office suite or building, not available to rank-and-file workers or the public. Only the exalted people – those who have been trust with (ooh!) the key – can use it.