I couldn't find any pics of the building before it burnt down, but I did find this interesting shot of the little parking lot that was suppose to be the ballroom. It looks like a window replacement company is using it now.
Now Wikipedia says Angela's School of Dance is using the building now. So if you go around to Queens Rd. to the front you'll see that part of the building. So what I'm thinking is you entered the building thru Angela's and the ballroom was in the back and that is what burnt down.
That is what is confusing, because I've read the Palais Ballroom was on Queens Rd. which would be Angela's School, but then they show you a pic of that empty lot which is on 54 Perowne St. and is that yellow building - DG Glazing Glass Co. Because that is what is their store front.