I wouldn't sweat it too much over the lack of temperature control (although I'm sure everyone will tell me I should, and it is on my list!)
Most of my beers have been fermented with ale yeast at "room temp" (whatever that is) sat on a heated floor keeping a roughly constant 20degC (ish!)
The exceptions are the Czech pilsner fermented last winter in the garage (cold!) and then lagered in the cryogenic lagering chamber (a.k.a. the shed)...
...and of course the Baltic porter with my
hi-tech temperature control system
I brewed the latter with Wyeast 2124, a lager yeast that is unusual in that is good up to 20degC - i don't recommend fermenting with it at room temp though as another beer i used it on wasn't great. However, it does give you a bit more leeway, enough that my water bath + ice blocks approach above is a realistic option.
One suggestion i would make is to get a copy of Greg Hughes's "Home Brew Beer" (a.k.a. the Bible) and try out his recipes which use a wide range of yeasts suited to the wide range of styles - Wyeast 3944 for example makes a great Belgian witbier
Another approach is to take a fixed recipe and try different yeasts - you can even split your wort between two FV's and ferment them side by side so you know for sure the only variable is yeast. Take a look at the Wyeast website, they tell you what styles a particular yeast is suitable for, and vice versa for a given style what yeasts are suitable for it.
Have fun!