best location for sightseeing

My husband and I are visiting Hong Kong for the first time next month. Which area is best to book a hotel? We want to go up to Victoria Peak, take a trip on the harbor ferry, and see as many places of interest as we can in a few days. We'll be taking a cruise from Hong Kong, too, so we'll need to have access to reasonable transportation to the cruise port. I will appreciate any suggestions for things that we must see while we are there. We are seniors,and we cannot walk for long distances.Thanks for your advice!