OK.
Go down Gan Jiang Lu heading toward the city, turn right at the turnoff at Li Jing Yuan at the corner of Feng Huan Jie and Gan Jian Lu, the "U" bend heading to Lin Dun Lu.
Just tell the taxi driver "Lin Dun Lu"... and "Dao le" , "Zai Je li (Zhe li) " as he turns right.
50 metres from the right turn you'll find a shop selling "Seally Posturepedic" mattresses.
The sign is in your face, so you shan't have a problem finding it.
If you do buy, have them organise transport of your new mattress to your place for free - otherwise you'll pay through the nose = way too much. The boys should also deliver it to your bedroom as part of the price, and take away your old mattress for free.
Remember to insist that the buy price is at least 20 -30% lower than what is quoted.
Bargain hard, don't be a sissy and let the rest of us down
Cheers,
Zak