You can go to Chengdu Beimen Coach Bus Station to take a bus to go to Zigong. Beimen Coach Bus Station is also called Liangjiaxiang Bus Station. It’s located on the Yihuan Road, which can be reached by Bus No.24 or 34. There you can find many buses to go to Zigong. It takes about 3 hours to get to Zigong. The ticket is CNY76 or CNY81. It’s very easy to find a hotel near the Beimen bus station. But I don’t know which standard you want. As I know, the Xiaoqi Yizhan Hotel is not bad. The room cost is less than CNY200. It’s very economical, I think.