The staff are, mostly, magnificent. One or two exceptions but that's par for the course with luxury hotels. I love the full-size pool/billiards table (found on level 6, Games Room) and the in-room dining is generally excellent.
I was only disappointed by the lack of options on the menu, though everything is prepared to a high standard.
The breakfast buffet (available on level 5, FiVth restaurant) is from 6:30 to 8:30 or thereabouts. We enjoyed it very much. I highly recommend the Oakwood Premier.