Uber is not legal but operating.

Taxi from airport to the Ren in Wan Chai should run $350-450 depending on traffic. Ren is near my office.

OR you can take the airport express train to Hong Kong station ($100 or less) and take a taxi from there to the Ren ($50). There is also a shuttle bus, but I find the wait and crowd not worth the savings.

Wan Chai has the advantage that you can get street food all the way to 3Star Chinese Fusion.

Dynasty at the Ren is my choice for business entertaining.