The outside doesn't really look like much, but the inside is very cool. It's a small little restaurant with a bunch of tables and then some private booths. I thought the booth areas were a nice touch. Although the seats were kind of uncomfortable, they were nice enough to give you pillows to sit on. The seats are pretty far away from the table/the other side, so I had to lean in a lot to talk to my date. You may want to sit on the same side of the table when you go.
The sushi was good. I thought It was a little pricey, but I'm always willing to pay a bit more for good sushi. The fish seemed pretty fresh, and the rolls were made very well. What more can you ask for?
The server was completely awesome! She was very concerned about pleasing the guests and it showed. She was so nice and always helpful. And she apologized whenever anything was even a little off. Like when she gave us different sized wine glasses, or when part of our sushi took a couple minutes more than the rest. I thought it was sweet that she was so worried about it, when I probably wouldn't have even thought about it if she hadn't mentioned anything. I know I would not have noticed the subtle difference in the glass sizes on my own.
Overall Daio is a pretty good sushi experience and I would go again if I was in the area.