Great place. I went during lunch time and got a seat at the counter. Don't be shy, people won't be obnoxious trying to talk to you and it's fun seeing them prepare the ramen. The service was good, especially during such a busy time. The ramen was delicious, my mouth waters thinking of it and it was beyond filling.
Space wise, it's not very spacious, might be a problem if you have a baby carriage or something. Biggest problem for me sitting at the counter was he lack of hooks under it for stuff. The stools don't have back support so I was kinda awkward with my bag and I saw other people struggling with their jackets and bags. Noise level it is super lively and here's shouting all the time, I liked the energy but you might not but this is something you should expect.