I believe this is the area of the Red Light Strict that has several windows (maybe 10) that are indoors and a few steps below street level if my memory serves me correctly. Is this right? The last time I was there it was never fully occupied, whether during the day or evening shifts. What's the deal in there? Any girls I should keep an eye on or stay away from?

Yes it's the covered area.
Google translate: https://translate.google.co.il/?hl=en&tab=wT#nl/en/Kamer%20Overdekt%20Gebied
Other than Cookie, when she was there, I've never been with anyone there, so I can't comment really.
I know Anna gets good reviews, but massive silicone tits are not my cup of tea.