There are dozens Vietnamese restaurants in Prague but this have one of the best price/size/taste ratio. They have many traditional Vietnamese dishes for verry little prices. Pho bo, bun cha or bun bo nam bo are classics. The interior may look little old but don't be discouraged. On hot days you can use the little garden. No table service here.
If you are travelling on a budget and want to try some Vietnamese food this is a good spot. You can also get free soup and jasmine tea (available in the dining room).
Staff does not speak English, but don't worry there is a menu with pictures.
Su: 11:00-21:00
Mon-Fr: 10:00-22:00
Sa: 11:00-21:00