Our current kitchen island is a standard 24" depth with a 15" overhang for seating. By stretching, I can juuuust reach the whole thing for cleaning, but I often walk around the whole island to clean it anyhow.
In the next kitchen, I was toying with the idea of doing 12" deep cabinets under the seating area side, so it would be 24" cabinets+ 12" cabinets + 15" knee space + 1.5" overhang on the front, or 52.5" deep.
Have you had this arrangement? How do you like it? Do you wish it was shallower, or is the extra storage worth the extra depth?
Any hidden benefits or negatives? Bonus points for pictures. ; )