Is it Ramada Hong Kong hotel? if that is the case, it's on Hong Kong island side. It's not really within walking distance from Sheung Wan MTR. u are booking 2 rooms? better to stay near MTR coz anytime, if the children are tired, can go back easily for halftime break. also, if a lot of stuff to carry after shopping, can easily go back and put things and come out again without wasting too much time.
Guess the usual places for shopping will be Ladies Market, Fa Yuen Street for street shopping, ard Mongkok area. The departmental stores in Causeway Bay and Tsim Sha Tsui area. If you venture further out, it will be like Shatin or Taikoo areas. Basically all are shopping centres. Tung Chung has a shopping centre called Citygate that has factory outlets. On the way to the Ngong Ping Cable car station.
Places of interests will be Ngong Ping Cable car at Lantau island, The Peak, Ocean Park and Disneyland, Ave of Stars, etc.
and of coz, cant miss the food........cha chang ting, dim sum, etc....