We tried Matt's today. Mediocre, at best.
The tiny OJ was bitter and expensive. The meats were really good, omelet and home fries were decent. Our waffle was poor. We have had better at make-it-yourself hotel buffets.
Service sucked. Our waitress ignored our order when it was ready and left it sitting until another server brought it five minutes later. There was no heat lamp apparent while the food cooled off as she ignored it. She actually hung the slip for another order over our food without bringing it to us. She had to get a glass of water to another customer first.
My guess is the restaurant's small size created a buzz among the locals who have never had a really good breakfast.
I've not been to the new place yet but based on 3 trips to the old place, I'm in no hurry to go either. i was underwhelmed by the food and service at the old place. I went back the second time because I thought maybe they were just having a bad day. Went back a 3rd time to confirm trips 1 & 2 were for real. They were. There won't be a trip 4!
Don't know if you're in town this weekend or not but if so, check out The Tempe Festival of the Arts. It's rated one of the top 20 festivals in the Nation. http://www.tempefestivalofthearts.com/festival-facts
Good Breakfast Hole-In-the-Wall in Tempe - Harlow's Cafe - University & Hardy in Tempe. It'll be crowded but worth the wait especially for the biscuits. No web site. go to Urbanspoon.