Your apartment is sooo~ lovely @Toni82 !!! And the view is....WOW!
I think @Ben205 made a good suggestion (it's what I have done as well), even though people really do not read descriptions carefully. In my case, I specify "(my home) has a total of 3 bedrooms 2 bathrooms. Our one and only guest will have full PRIVATE use of the guest bedroom and bathroom which is across the hall from the bedroom. Host uses the 2 other bedrooms and en-suite bathroom".
Also, I find that people tend to focus more on the pictures, so you could specify Guest Bedroom (Private), Guest Bathroom(Private), Living Room/Kitchen (SHARED SPACE) for each picture you have.
Hope this helps!