I found this great article on hole-in-the-wall breakfast spots that was published in 614 magazine last November. There have been a few changes, Big Bites at 79 S. Fourth Street is now Hae-Paul's and does serve breakfast lunch and dinner. The Inn Between has a new owner and is now called, The Hungry Soul Cafe. And finally, Manifesto opened last November and is open during the week for breakfast starting at 8 a.m.
http://614columbus.com/article/breakfast-with-nick-around-the-corner-down-5574/