Good idea from Hotel "Alagare" in Lausanne/Switzerland they build an O scale layout in the floor of their breakfast room. The room itself is decorated as an Orient Express dinning car. It's a basic layout, can run 2 trains. The engines and rolling stock are all MTH and tracks are Lenz. The trains run for 2 minutes and are controlled by the customer.
Article and video in French only
http://www.20min.ch/ro/news/vaud/story/14527113