River Tai is a hidden gem.
It's a hole-in-the-wall classic Cantonese restaurant. I know some people have been put off by the $3.99 special because it is so cheap that they question the quality of the food but you don't get a huge portion (perfect for lunch). The appearance of the restaurant is clearly not super enticing but I always do take-out and the food is great (the owners are also super nice)! Try it out, you won't regret it!