Haven't found the first hotel you mentioned. Is it the Shang Da International Hotel, located at 169, Guang An Men Nei Da Jie, Xunanwu District. If so, you could take the shuttle bus Line 7 to Beijing West Railway Station firstly and then take a cab to the hotel. The shuttle bus fare is CNY16/adult and the cab fare is about CNY20.

I think it is better to take a cab from the airport to the hotel directly, which cost about CNY110, much convenient and comfortable.

The Jinqiao Int'l Garden is located about 6~7kms away from this hotel. It is suggested that you take a taxi to reach there. The cab fare should be CNY20 more or less.