Room for aircraft cabin

A room for an aircraft cabin which is a hollow box shape and installed in the aircraft cabin, the room comprising:

• a room floor wall portion that is configured to face a seat of the cabin and to be disposed above the seat;
• a room side wall portion that extends from the room floor wall portion in a direction away from the seat and includes an opening portion to permit a passenger to enter and leave the room;
• a ladder portion that extends in a direction toward the seat from a periphery of the opening portion;
• and
• a room ceiling wall portion that extends to couple the room floor wall portion and the room side wall portion and includes an engagement structure with an inner wall of the cabin, wherein
• the inner wall of the cabin includes a cabin ceiling wall and a cabin side wall,
• the room ceiling wall portion contours a portion of the cabin ceiling wall and a portion of the cabin side wall,
• a first end of the room floor wall portion in a width direction of the cabin is not directly connected to the inner wall of the cabin, and
• a second end of the room floor wall portion that is opposite to the first end in the width direction of the cabin includes an upwardly curved portion, and the room floor wall portion is directly connected to the cabin side wall via the upwardly curved portion.