we have 7 people arriving at 10pm what is the best transportation option to hotel near tiananmen square in Beijing

It is best to take to taxis to get there exactly or you can reserve the airport pick-up service as you are a group of seven! By public transportation, you can take shuttle bus line 1 to Dabeiyao (Guomao Bridge) and then walk to Guomao Metro Station to catch the local subway line 1 to Tiananmen East or West! Aterwards, you can easily walk to your hotel nearby!