I think an inverted wall would look pretty nice, with a double layer floor with positive and negative ghosting.
If you imagine the walls extend 3 feet below the floor and fade to dark brown - almost like someone took up all the floorboards and painted anything below the floor level. Then if you take the floor and make that 2 seperate meshes and take the texture and make a negative and positive ghosting version and mix them together. So your floor would be translucent, maybe 60-70%, and the extended floor would show through as it fades to dark brown, or the floors actual colour.
This way you would only need to extend by a few feet, maybe mirror areas with more detail, but the idea is that your not repeating the high res paintings, so it should be quite processor friendly.
Areas that you want to have greater shine, like a window for instance, you could make the recess deeper to allow for taller reflections.
It would probably be best to make the reflection area a seperate object, then disable lighting to give a solid floor colour and gradually fading wall reflections. You'd actually be able to decide how reflective the floor is by how deep you make the extension and how you fade it out.
If you wanted to add some sculptures, say a vase, then you could add the reflection part under it and fade that too, it would stick through the floorboard parts and match the wall reflections perfectly.
Great to see you back on the forums BTW Pincho!
