Hotelsbyday is new, just read about it recently on our cruise forum - it's a new startup from 2014, home base in NY & growing slow in big cities like Chicago - specialized in day rooms ... something that Priceline, Hotwires & AirBnb could be doing. Not sure if anyone wanted to rent a day room at a Comfort Inn unless it's a "clean" bed to sleep and/or store luggage.

I did scan a few articles & reviews written, seemed fine and "kosher" to me - free mobile Apps to use for easy/quick check on availabilities. Good luck & if anyone has feedback after giving them a trial run, would love to read about it.