hi there, we will be in rambler hotel HK, how can we go to lanson place and sky100 and back?

From your hotel, it is suggested to take a taxi to reach Tsing Yi Station of Tung Chung Line. Then you can take the MTR Tung Chung Line to reach Kowloon Station. Get out of the station from Exit B, you can see the Sky 100. For the back trip, you can use the same way.
From your hotel to the Lanson Place, you need to reach Tsing Yi Station to take the Tung Chung Line to reach HK Station. Then you can walk to reach Central Station to take the Island Line to reach Causeway Bay Station. Get out of the station and then walk about several minutes to reach the Lanson Place.