Staying in HK
Depends how much you want to pay. You could try staying at the Headland for a few extra days, contact Monica in recruiting to see if she can organise it. Otherwise, there are plenty of hotels in HK, but you would want to stay in the Central area, if getting out and about is your idea. Public transport is excellent, and there are literally thousands of taxi's that are cheap to get around in and most cabbies can speak some english. Go to Lan Kwai Fong and Wan Chai for nitelife, Soho for restaurants, Stanley for some shopping, the Peak for some nice views, wx has been really nice here for the last few weeks and the vis has been great on a few days even! Get over to Tsim Sha Tsui (TST) and Kowloon for a wander around, or a genuine fake watch! Lots to do, and make sure you mention during the interview you came to have a look, and that you loved it!!
Good luck, pm me if you want anymore details