Several Rooms\locations in one scene Technic

I want to implement the technic with several rooms\locations in one scene (where camera is not following you but switching of locations leads to disappearence of first and appearance of a new location. Example here:

I have an object for each room that contains corresponding items of the room.
The question is - what is the best way to switch rooms:

My current variant is to deactivate (roomObject.SetActive(false) current room and activate next one. It will help save all objects left in the location saved.
The minus is I dont know how to hide each room except the first one on the start

Base room class:

Code (CSharp):

1. using UnityEngine;
2.  
3. public abstract class Room : Element
4. {
5.     public  GameObject roomObject;
6.     protected  Room NextRoom;
7.     protected Room PreviousRoom;
8.     protected GameObject rightDoor;
9.     protected GameObject leftDoor;
10.  
11.     public virtual Room MoveRight()
12.     {
13.         this.Deactivate();
14.         return NextRoom;
15.     }
16.  
17.     public virtual Room MoveLeft()
18.     {
19.         this.Deactivate();
20.         return PreviousRoom;
21.     }
22.  
23.     public virtual void Deactivate()
24.     {
25.         roomObject.SetActive(false);
26.     }
27.  
28.     public virtual void Activate()
29.     {
30.         roomObject.SetActive(true);
31.     }
32. }

Example of room code:

Code (CSharp):

1. using UnityEngine;
2.  
3. public class Room2 : Room
4. {
5.     void Start()
6.     {
7.         this.roomObject = GameObject.Find("Room2");
8.         this.NextRoom = GameObject.FindObjectOfType<Room3>();
9.         this.PreviousRoom = GameObject.FindObjectOfType<Room1>();
10.     }
11. }

Controller that is helping to change a room

Code (CSharp):

1. public class RoomController : Element
2. {
3.     private Room currentRoom
4.     {
5.         get { return app.model.room.currentRoom; }
6.         set { app.model.room.currentRoom = value; }
7.     }
8.  
9.     void Awake()
10.     {
11.         Messenger<bool>.AddListener(GameEvent.DOOR_ENTERED, ChangeRoom);
12.     }
13.     void OnDestroy()
14.     {
15.         Messenger<bool>.RemoveListener(GameEvent.DOOR_ENTERED, ChangeRoom);
16.     }
17.  
18.     private void ChangeRoom(bool isRightDoor)
19.     {
20.         this.currentRoom = isRightDoor ? currentRoom.MoveRight() : currentRoom.MoveLeft();
21.         this.currentRoom.Activate();
22.         app.controller.character.ChangePlayerPosition(isRightDoor);
23.     }
24. }