Mekong recently opened at 917 Columbus Ave, between 104th and 105th Streets. It appears to be by the same owners as Tum & Yum, which previously occupied the space. Tum & Yum was strictly Thai, whereas Mekong offers both Thai and Vietnamese cuisines, plus a number of Pan-Asian dishes.
They offer a daily lunch special between 11:30am and 3:30pm which comes with a soda or water.
The UWS restaurant is open every day between 11:30am and 10:30pm.
So far their Yelp reviews are all 5 stars.
Here are a couple of photos from their Yelp.
Drunken Noodle: stir fried flat rice noodles with basil, onion, bell pepper, tomatoes, carrot and chili.
Shrimp Summer Roll: this appetizer is made with shrimp, lettuce, bean sprouts, mint leaves, vermicelli and chive leaves, wrapped in rice paper and served with peanut hoisin sauce.
Lemongrass chicken vermicelli: one of their Vietnamese lunch specials.
Learn more about Mekong and view the whole menu on their website here.