101 is a guest room on the Spencer Rain.
The room is placed on the starboard side of the ship. Like all First Class rooms, it comes with a private hallway for observing the sea. The bedroom and en suit bathroom cannot be explored.
There are two bodies in this room - one being hung by a rope in the living room, while another is collapsed in the hallway.
The "Upper decks map" can be obtained from the body in the hallway, along with the 1st class key. After obtaining the key, the body will rise as a zombie.