Atm the House S guard house in the docks has no real use. Why not put the snake quest quest giver guy outside there instead? It'd be more logical imo.
It is also closer to the QA and this will help LiS speed up his Powergaming XD.
Finally someone who understands me!
The quest is about missing children, not about Hey I found some snakes down here. I suppose the DM who implemented it expected some kind of looking around the docks before bolting straight to the QA as most people do.
"We've tracked the culprits to this building, but House Sharboneth can't spare the man-power to investigate."
"We'll do it."
Solves that problem, and also highlights the man-power issues that Sharboneth is going through.