Jacuzzi tub hot water valve locked in place
You either have a useless tub taking up space, or you do what needs doing to fix it so it's useable. You may also have a claim against your "home inspector" for not catching it - that sort of thing is exactly why you wasted money to hire them, after all.

I would go in prepared to "break tile" (more likely I'd cut it out, actually - it's neater, and I'm not a plumber who does not care what sort of mess they make for some other trade to clean up) and I'd replace the broken tile with an access panel because having to break tile to access plumbing is a really poor design choice made by idiots, in my not so humble opinion. 

Actually - Might look underneath, too, in case access from below could be done with less mess.