Phuket Holidays

Hi .
I am looking for a decent family and kids friendly hotel in Phuket for my visit in July.
I am looking for following features in the hotel:
a. Daily room rent for a twin beds room arround USD 50/=.
b. Hotel to be near shopping & eating areas, and also near to beach.
c. I would like internet ( preferably wireless ) to be available in rooms.
d. As there will be 11 yrs and 6 yrs old kids along, so I am looking for such a place which have some entertainment for kids as well.
Anyone have any recommendations? Your help is much appreciated. As I have heard that hotels in Patong ,situated on the road next to beach are much lower in price and just 5 mins walk to beach. Please comment.
Further, how much does usually a taxi cost from Phuket Airport to a hotel in Patong area?
Thanks
Andrep