This sounds a little more serious and chronic than the odd knee scrape, which should probably be treated with antiseptic and covered with a band-aid, no?

Same with the odd nose bleed, it happens sure, but this again sounds like something chronic that should be planned for in advance and not left for the hotel to deal with. If you want the hotel to deal with it, particularly on a regular basis, you should be expecting to pay a fee for their inconvenience.