There's an MP spreadsheet buried somewhere in the Ottawa forum. I suggest you search for spreadsheet, pick a girl/agency that seems to interest you, glean what you can from them on the spreadsheet then search for their names in the forum and see if anyone's reviewed them. I'm not an R&T guy so I can't offer any advice other than what my colleagues in here have written in other threads.
Let us know where you're staying and we can surely recommend the nearest SC's for you, and of course if you want an SP there's lots of advice to be had there too.
Enjoy Ottawa.