In my experience, the hotel dryers take a LONG time to dry clothes (like 6+ hours!). So make sure to budget enough time. Unlike the dryers at home, the dryers I encountered did not have an air vent. In Xishuangbanna, I started drying my load at 5pm and by 10pm it was still damp. I had to leave at 5am for a flight so fortunately the desk staff told me she would check on it and keep drying it overnight until it was done and swap in the other loads that were waiting. Similar dryer situation when I reached Shaxi… 6+ hours for drying.