It's the worst of the brothels that crew operate for scuzz, not discrete entrance/waiting, dodgy partitions inside, punters milling around in reception/using toilet etc.
It's better to see her at the Edgware Road place but TBH I won't bother in future as she doesn't put in anywhere near the performance she used to and the weight of her rack is causing them stretch marks. I notice as the veteran she tends to play maid to the others and the flat, though one time I saw her she let me stay way longer with her sat on me CG for ages as she was just opening the door to let punters in/out and was having a lazy day.
It sounds like you caught her like that, the first time I booked her another WG let me in and she was asleep under a duvet so she told me to get naked and join her under it.