You could consider the brand new 338 serviced apts in Sheung Wan, about 10 minutes/HK$40 from Queen Mary by taxi.
Read More
If money is no object/you have a very generous employer, you could also consider the following, which are run by Four Seasons and part of the IFC2 complex:
Read More
Both have the advantage that they are on the Queen Mary side of Central, so you don't need to endure Central's traffic to get to QM.
You might also be lucky and find a break-lease at either the Belcher's or Cyberport. Both are new and fairly high end large developments about 5 minutes taxi to QMH (but not serviced).