鼓楼西大街 大石碑胡同27号 Gulou Xi Da Jie, Dà shíbēi hútòng 27 Just walk up towards drum tower from Shi Cha Hai subway station. By the intersection connecting Gulou Dong da jie, Gulou Xi da jie and Di an men wai da jie, dont cross, just go left (west). Follow Gulou Xi Da Jie, past the parking lot on your left. Past Jiugulou coming towards your on the right. And there, opposite to RAJ Indian restaurant, turn left in to the hutongs. And 4C is right there, just around the corner.