It will either be in the possession of the owner of the house, and, if not, in some of the adjoining rooms. Remember - the key to the room is always inside of the house. Additionally, you can find hidden / closed rooms in the houses of residents, where you will find a chest. The game allows you to enter each and every house, search every chest and pick up almost every item. It's quick, often of almost no risk and it guarantees you huge profits. Robbery - without a doubt, the best method of earning gold. Cecil's apartment and the key hidden under the pot.