Mike Dalkubara is an industrial designer and urban sketcher who has also published several E-books. Notice his wonderful sketching style in these two Hotel Layout Sketches. The image below was drawn on the hotel paper, you can see the logo on the top. What a great idea to sketch your hotel room when you are traveling.
Visit his site to view more of his images . Be sure to take time and see the preview of his fun E-book that is filled with drawing examples called Sketch Mike Sketch. I find this E-Book format is such an exciting way to view sketches and get inspiration.