I am using Hotwire for the first time, and a 4 star in the Mag Mile/Streeterville area is $72 a night, and a 4.5 star is $103 for the night. Does anybody have and suggestions or advice on this? Is it worth the difference? Is there that much difference in the half star? I've never used Hotwire before, and am a little apprehensive. Thanks for any help!