Willeis shack

Nothing else to do but wait it out. Finish all the quests you get and try to leave your characters free so that they can interact. Sometimes this triggers a new quest. I have had a couple of days that nothing new came up, but than suddenly it started moving on again. Don't look to much at the requirements for a building though. I was waiting for Moe's, but it only came up when I was already at level 17.