It is said that the Line 4 will be put into use at the end of this month. So, you could use it in Jan, 2010. The Novotel is about 9 kms from Beijng South Railway Station. So, you could hire a taxi to drive you there directly, the fare is within 30RMB. For a budget method, you could take the bus 692 from the railway station and then get off at Chongwenmen Xi which the hotel is about 200 meters to the east of.