I wouldn't necessarily make a special trip out here to the Letná neighborhood, but if you happen to be staying somewhere nearby or find yourself at Hradčanská metro station (an easy tram ride away), Fraktal is a welcoming spot to grab a beer or have a light meal. In contrast to some of the places downtown, the clientele here is mostly local, with big groups of students in the back and a row of expat regulars seated at the bar. You'll find decent bar food, including good burgers, and a pleasant terrace out front to enjoy a summer night. While it's primarily a drinking venue, the daily lunch menus (Mon-Fri 11:30am-2pm) are excellent and good value.