Ruel Del Valle
Google
Interesting place beside the railway in Hanoi. Great vibes - fueled by a great selection of 60s, 70s, 80s, 90s and 2000s Western music...
Good selection of premium Vietnamese liquor brands. Will have to try it the next time.
The place may be small but it's very cozy.
PRO TIP: If you like a non-touristy place to experience the famous Vietnamese train pass by, then this place might be for you. Check out the train schedule (for you to have the perfect timing).