I'm torn on Jinya. There are a lot of positives to it. Firstly it is open until 3:00 AM, far later than others in the city. Next, the sides are great. The gyoza, quinoa salad, chashu bowl... They all taste so good and the prices are excellent on them. Last, the service has never been bad when we've gone here. If they make mistakes, they correct them (often with a free item). The servers are all 5 stars.
However, there is one huge negative to this place. The ramen. I don't think I've had a good bowl of ramen here in the near 10 times I've been. My wife has said the broth is very slimy which she says is a indicator that the noodles are cooked along with the broth. The worst part for myself is that the flavor of the ramen have a greasiness to them. Almost like fried chicken. Especially their Tokyo Yatai. It tasted like KFC in a bowl. This flavor extends to their other ramen, like the Tonkotsu ramen. Also, the broths are very one dimensional. I feel a good broth should have a depth of flavor - a bit spicy, rich, salty, etc. But the broths at Jinya are just flat, generic tasting.
That is why for all the positives, I just can't get behind Jinya. The ramen isn't very good, actually it's below average. That's alright if it's a generic Japanese restaurant or Izakaya, but for a ramen shop that specializes in ramen, that is damning. There are so many other options in Las Vegas, that you should skip Jinya. When most of their ramen are approaching the $10 price range, I feel you should be getting a great product.