why not take the LACK shelf and flip it, so the shelf side is facing into the room? You might need to get a little creative with the mounting hardware, but this is a great way to create some semi-concealed storage and reduce visual clutter.
Sparkling Castle - for old or dirty grout add 7 cups water, cup baking soda, cup lemon juice, cup vinegar into a spray bottle; Spray onto grout and let sit. Scrub with a brush and mop off excess. Sparkling grout from Sparkling Castle.