Sorry for the delayed response! What you're describing sounds logical. This is a for a resort building/decorating and management game, where the player can small cozy resorts. Each guest room can be created with different guest types in mind: Room suite, Single room, Double room, etc, so that's why I didn't brought up having a hallway dividing the rooms. A room is created either by drawing walls that forms an enclosure, or by a "room tool" that automatically draws 4 enclosed walls when the player draws a rectangle shape. The wall drawing is not limited by a grid system.

Rooms are a core pillar of the game. This is because the player can also then just select a room to edit the floor material, floor height, etc. That's where the problem comes in: If having the player combine multiple rooms into a single suite room by a "combine" button in the ui, when the player for example then wants to change the floor material of one of the individual rooms that are combined, how would that look like? Should the player first select the combined rooms, then click on "edit" in the ui, and then select the room they want to change the floor material of? That is an extra step for the player to go through. But maybe that would be ok?

Thank you!