I have been planning my next trip to Slovenia, sadly its only business, and been using google maps to work out the easiest journey; there aren’t that many direct flights to Ljubljana from the UK. I came to the conclusion that the provided icons are still missing some useful objects. I wish they had icons for an office, hotel and school/college. I am using the red bed as a hotel symbol, rather than as a hospital and the extras would be good. How about a mortar board, or is that insufficiently international.
You can see what else I found by looking at my bookmarks tagged as google+maps.