Quality place. Really good repairs and servicing.
After renting for a time when first in Hanoi, I took the plunge and bought a knackered manual bike. After trying other mechanics who did dodgy work, went here instead. Phung fixed everything, very cheap, and made the bike work great. This place is grand.
Phung is a really decent guy, gives you a good price, does quality work on the bike and if your Vietnamese is less than perfect, don't worry because he speaks English. Great guy, great place.