I would thoroughly recommend Chengdu Tailored Real Estate
It is a relatively new company but the service I got was second to none and actually continues to be great 4 months on.
They really get the idea that customer service goes beyond getting your money. They also preview places fro you which stops your time being wasted.
They helped me move into the Poly Center in November and actually that might be the perfect place for you based on your description. It is right beside the Consulate.