Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Q: I was browsing London hotels on hotels.com and noticed that many, in the room information section, said they had "partially open bathrooms". This includes one where the room is described as en-suite. The site offers no definition. It seems to be a general hotel-site category, rather than something specific to these hotels.

What does this mean? Is the bathroom partially open because the door doesn't fit the doorway?

Or is there a viewing gallery for spectators?

Or is one wall missing?

I'm aware of the unfortunate existence of "open concept bathrooms" or "open-plan bathrooms", where paying couples are made to hear, smell and (if they don't studiously look away) see each other doing things that humans were intended to do in private, described accurately here as "the ultimate hotel horror". Is this that?

I've tried looking online but the results are inconclusive:

This tripadvisor question's answer completely misunderstands the question
One random person on Yahoo Answers says it's a bathroom with no door or a glass or what sounds like a "Wild West" style saloon door

A:
What is a "Partially open bathroom"?