You have available a complete preloading or loose objects.
The slabs-floor can also be nice to use alone or supported on a very flat terrain.
The seat of stone can be placed on any other wall.
Besides you can also upload only the detail of the carved wall+basin+water+tap and place them into another scene, or on another wall: remember to sink the thickness of the carved wall at least for half of its thickness.
If you load the Preload complete, remember to only move the object that is called Terrain in order to move it all together.