Lozz,
I agree on the Royal Park, I was there for 2 weeks, the location is good but it gets claustro fast.
I'm now in Ma On Shan in a serviced flat at the Horizon Suites. Their promotions show a price of $6,288/mo, but from all I hear that's a total white elephant, like one apt in the whole building. I'm paying $18k/mo for a 2 br, because I only wanted to commit to 2 months. They offered me $15k if I'd sign for 6 months, and I could have likely negotiated bit off that.
It's an OK place, just has a 2 burner electric hotplate but a good sized 'fridge and micro. The bathroom is nice and you get a washer in your flat. Dryers are available downstairs and they have laundry service too if you're lazy like me. They also have free shuttle buses for Shatin area destinations, and one that goes to TST for $10. It's just a few minutes' walk from the MTR.
If you go there don't let them talk you into the flat-rate electricity deal. They want $1,000/mo, and my bill for electricity this month was $98... I can't imagine how you'd use $1000/mo -- maybe running the washer and aircon 24/7.