I came to Dondon for the very first time after walking by numerous times. I ordered a variety of items I typically order at izakaya such as takowasabi, ebimayo, and sashimi. In addition, I ordered sushi and this rayu udon. Most of the items were great. I didn't think the sashimi was that tasty though.
The rayu udon was the most disappointing item for me. The picture looked like it was some crazy udon but it was actually some spicy udon. The udon came out with a spicy sauce/oil in the bottom to stir. It didn't feel like it went well with udon noodles. I prefer spicy sauce with thinner noodles and with more absorbency. I felt that the spicy sauce was too slippery on the udon noodles.
The service was great. Staff are friendly and enthusiastic always. The food came out fast although it was really busy.
In terms of food, it was good but nothing stood out to make me return if I wasn't in the area. I prefer other izakaya restaurants. However , Dondon is a good choice if you are nearby. It is in a good location so I can see why it is really crowded.