Looking for a flatmate for a week in Cape Town: Where to post?

[pilot]

I rent a beautiful 2br townhouse (3 floors with a 1000sq ft rooftop terrace, amazing view of Table Mountain) every year (first week in Dec) in Capetown (on Napier St. in De Waterkant) and have typically gone with a friend. This year I've already paid for it and my friend has had to cancel. I'm a little hesitant about staying there alone so was wondering if any one had any ideas on where to post for a flatmate. I'm a late 30s professional, not a party boy and not looking for or to be a daddy :-)

I started here but apologize in advance to the moderator if it's not appropriate.