Does anybody have any experience with or recomendations for child care services in Melbourne city?

We are coming to Melbourne next month to see a football game (Carlton v Essendon) and will be in Melbourne for three days, we are going out to tea on Saturday night to Jamie Olivers place, 15 and I was planning to take Angus (who will be close to 8mths by that stage) along.
My family have been pressuring me to leave him at home totally so I can have a break in Melbourne (Hah! shows what they know, how can I leave a little man who is still trying desperatley to cling to being just a booby boy (very stubborn about the introduction of solids) and have a stress free time??????? I don't think so)
So as a compromise I was thinking of hiring a professional child minding service (nervously) to stay with him in the hotel apartment just while we go out to tea.

please let me know the good and the bad as I am trying desperatley to make an arrangement that I feel totally comfortable with
appreciate any input