It's not a particularly well-explored street, but ul. Jakuba in Kazimierz does contain Opium, an intriguing blend of a number of different ideas that go together surprisingly well. Although primarily a dance club, Opium has a couple of additional features that make it well worth seeking out, especially in the warmer months.
First, there's a small mezzanine terrace above the courtyard that gives a fantastic view over the old Jewish Cemetery behind the (still active) Remuh Synagogue; a chance to get a glimpse of a rather forgotten part of Krakow's culture whilst enjoying a relaxing drink.
Second, and this is what strikes you immediately upon entering, is the fantastic and very large courtyard. Orangey-red crumbly brick walls are festooned with ivies and hanging plants, and there are plenty of comfy sofas to sit on. In the summer there is a grill, where one can enjoy the traditional Polish 'kielbasa', or sausage, at its very best.
The two above features come highly recommended, and Opium makes a great place to while away a warm summer's afternoon. But as the title says, it's also a music club, and when you head inside there's yet another angle to this fascinating place. A large bar area with a burgundy colour to the walls and décor offers smart surroundings and plenty of room to mingle. During the week, the club offers an eclectic variety of live music and recitals, and at very reasonable prices. At the weekend, however, it's all about dance music, with pumping music from the eighties, nineties, R & B, Dubstep, and electronica keeping the dancefloor hopping deep into the dawn. Drinks prices are low, and each day features some kind of special offer on shots, etc.
ul. Jakuba 19, Jewish-QuarterView Larger Map