You can attempt to break in the house if you have Sneak .
- You will find 3 Bronze Goblets in the kitchen drawer. You will need Sneak  to pass by the guards.
- The dinning table, in the room in front of the kitchen, has 4 Bronze Goblets.
- You need Lockpick  to unlock the door and access two chests.
- You cannot enter the main hall with the guard - no matter what your Sneak level is