3.5-4 stars if the service isn't so horrible and the food isn't overpriced.
5 stars for their tea selection and staff knowledge of teas. I fell absolutely in love with the honey ginseng tea. If you're sick, have a sore throat or flu... I highly recommend this tea! It goes down smoothly and clears up your sinuses. They offer a large selection of iced and hot teas (pot or cup) and bobas, the quality is good and flavors are delicious. There is something for everybody.
Now on to the food... good selection (they've expanded their food menu), but prices are pretty steep for Asian food at a tea spot. The dishes and appetizers can stand to be $1-2 lower. Although the portions are generous and the presentation is lovely, in the end it is off-the-strip Asian food and the prices can be shocking to most locals. Needless to say, the food can range from good to great. After all, it's one of the only places in Vegas that offers green tea noodles (yum!) and their rice dishes come with complimentary side dishes (Korean-style). We definitely enjoyed our meals... hearty and plentiful.
Aaaaand the service... AHH! The horrible service! The workers are nice, but not experienced. No sense of multi-tasking, forgot a few things we ordered... I had to get up and chase someone down for a refill on our waters. Whenever we needed ANYTHING, it took way too long for anyone to approach and deliver. Hopefully, they re-train their servers so that the overall experience for customers can improve.