I seem to be stuck at the "The Walls Have Ears" quest in act 2, on Iorveth's side.

I found some drawings of the cup in one of the Human Enclave houses, but is unable to talk to anyone in there. I'm rather clueless of where to go next. I don't know where the servant is that I'm supposed to talk to and so on.

So I would be very grateful for information about where to go and who to talk to, to finish this quest, thanks.

There's a group of three dwarves near where Dandelion and Zoltan is standing, the guy to talk about the cup with is with them.

The servant is in the human enclave not too far from the castle/riot.

Thanks, I had to load an older save to be able to talk with the servant, and then went and found the cup drawings once again.

Still not sure what I need to do to finish the quest, though. It just say "Wait for events to unfold" even though the mob event passed and the prince is in jail.

Also, I wonder why the official game guide doesn't cover this quest?

Not sure why it doesn't cover the quest as it seems to be fairly integral to things but even then the official guide does seem to be a more basic overlook than a proper step by step walkthrough.

It cannot be completed.