staying in Silka hotel in Tseun Wan, Hong Kong. How far is it from the main city attractions?

There are many attractions in that city. Which one do you refer to?
If you refer to the city center, Central area, you can walk to Tsuen Wan Station to take the Tsuen Wan Line to Central Station directly. There you can walk to peak tram station, where you can take the tram to Victoria Peak.

During your two day visit, you can go to Disneyland Resort, Ocean Park, Victoria peak and Tsim Sha Tsui.

Tsim Sha Tsui is kind of the transportation hub of that city. The MTR and bus are quite convenient.