located north and west of flotsam.
find foggy area in the sea.
then the room name should change once more, and it's tricky to get there

from flotsam fountain, these dirs should help
nnnnwnnnnnwnnn

between granite cliffs is close, go north if you are there
then wander the town.
thieves there, and they detect invis.
skarr is dn of the inn.
level 7 fly scrolls (bound scroll) are sold here and are cheap.

some stabber and crazyness if you go all east in the town, but not that big a deal.