Was not a fan of these guys. Was excited to check it out based on the recommendations of a friend but left disappointed with the quality and especially the staff.
I really love late night ramen and it was cool to see these guys open so late, and we came by right around midnight for a late dinner. I got the garlic ramen and it was decent but I would argue there actually wasn't enough garlic with it. The noodles were okay as well but nothing special, and the price/value overall was fairly average. Overall, it was fine and definitely filling, but the flavor was a bit lacking.
The staff was where I had the real problem, though. Our waitress couldn't be bothered in the slightest with us and barely spoke to us while taking our order. We really never saw her again as other servers came to refill our drinks and such. We ordered two appetizers we didn't receive until we brought them up twice and they arrived after we had almost finished our ramen, and my wife didn't get a drink she ordered until late as well.
The waitress also mixed up our check with another one and added items onto ours that we didn't order. When we went up to talk to her and a manager about the bill and the lack of service, we were met with indifference and no effort to make things right. I'm not usually one to complain about wait staff because I know it's a hectic job and I don't leave crappy reviews for for things like waiting a few extra minutes and such, but this was not acceptable, at all. With so many other excellent ramen options in Vegas, we will not come back to Jinya.