Given this crew operate 2 premises getting a swapped address for the same/actual SP wouldn't be surprising, the first address might've been for a B&S and they were actually directing you to the correct address when you insisted.
Whether you've seen this lot's girls before and regardless of whether you insist, you may still get B&S'd because they really don't care about regulars. The location is prime for lots of passing/casual trade from a huge catchment of City and Hoxton worker types as well as the rougher trade from Whitechapel. Their service levels are not consistent enough across the group for them to be able to hold down a fancier pad with discerning regulars, Byanca is the exception but if she went solo then she'd be trading +50 or more ph just for the rent which might kill off her trade.