I've been a regular customer at ribon for just under a year now, I must say that the food and staff are lovely.
I've had a party with my colleagues a few times, karaoke and lots of drinks. It's a very hospitable environment.
As they just started a delivery service I am now able to collect food from my company house (Sumitomo BC), the service was surprisingly fast considering the distance between the restaurant and I.

I recommend ribon to anybody who want to enjoy Japanese cuisine.