I've lived in Toronto for the last 7 years so I thought I'd make my contribution.
Attractions of Toronto: erhm, not much. Niagara Falls is 2 hours away, that's all I can say. If you like to play golf then there's lots of great golf courses. Local restaurants are quite good - use blogto.com as a resource. As a hub Toronto is pretty good, since you can get to Montreal or New York easily.
note: best time to visit Toronto is from April to late October. Other months: too cold for you - temperature can drop to -20C so you might have to bear a 50C temperature difference
#1 Good news - prostitution is legal in Toronto, so you won't go to jail, unlike the US or Sweden where you can get into LOTs of trouble.
#2 Good news - Toronto is one of the most diverse places in the world. Meaning that in 1 day, you can get Korean, Mainland Chinese, White, French, Caribbean, Middle Eastern and Russian pussy. The white girls are mostly locals, part timers and provide decent service as long as you use the good agencies.
#3 Bad news - Canada is a developed country so the prices are higher. Expect to pay at least C$240 (approx S$290 as of Jan 2014) per hour.
#4 Bad news - the scene is not as organized and efficient compared to Germany's FKK industry.
Local resources: the local review board [URL="http://terb.ca/vbulletin/forum.php[/URL] (terb.ca if the link is broken)
Most of the scene is limited to incall/outcall agencies. There are no government sanctioned red light districts like Geylang. There are no freelancer bars like Ipanema of Singapore, or Beach club in KL. There is a streetwalker street but quality tends to be poor. There is also a strip club scene but it's a pure waste of money and the girls mostly don't provide full service. Some of the massage parlors provide full service but they're far away from the city center. There are also ads in the Now entertainment newspaper but there's a high likelihood of bait and switch.
So the routine (to save time and money) is to read reviews on terb, check availabillity then arrange booking. A lot of the girls come and go so check for latest information.
To give you an idea of local quality:
http://gtagirls.com/ (this is the website of a local photographer who specializes in taking photos for the agencies, so all the photos are legitimate)
http://mirage-escorts.com/welcome.htm (they specialize in French canadian girls - a little bit of photoshop in the pics but generally true to life. Usually great service)
http://www.gardenofedenescorts.com/www/home (higher end agency)
http://toe88.com/ (Koreans/Japanese)
http://www.moonwaiting.ca/ (a little far from downtown core, but a good agency)
There're also other agencies like roommates, select, sassy, maximum pleasure, toronto girlfriends but the ones listed above are among the best.
Bottom line: Toronto will never be a destination for cheongers but if you're in the area and need some action, then industry is not bad.