Why is there no option for sorting by distance?    That is probably the most important factor.

You can't search by distance but you can click on the "view map" Also, under each hotel name is says how far they are located

Also you can consult the hotel information on our site to see exactly the distance.
https://www.gencon.com/attend/hotelmap
 

There's totally a "sort by distance" option--at least when I use the portal!  This is on a PC.  It defaults to "sort by name," but there's a dropdown in the upper left above the hotel names that you can select. 

FWIW, when I selected "sort by distance" on the portal it did not sort by distance.  Airport hotels & nearby hotels were all mixed together seemingly at random.

That happened to me once: sort by name, and then try sorting by distance again.  That worked for me, anyway!

It worked fine for me; but, as ematuskey mentioned, it can be a little wonky if you search again. You need to reset the sort option.

Under "show more filters", the portal lets you search for hotels with ISDN lines, but that doesn't work either.  :)

(That is the only thing I know about the voice acting world, that ISDN was somehow a standard for like 15 years longer than made any sense; might still be in some places for all I know)