I cycle here regularly, about 5000 km so far this year, and can thoroughly recommend it. Compared to the UK, the roads are very quiet, although back roads can be very badly surfaced (but as I run on 2" tyres, I don't care). Driving standards are "different", though drivers generally show more courtesy to cyclists than in the UK. It does, as you would expect, get very hot in June, July and August; but away from the coast it is a very dry heat.
Then there are the dogs. Many are very friendly, and would actually make lovely pets. However, beside SNSSO, I know personally someone here who was hospitalised for several days by a wild dog attack; and two winters ago, two people were killed in the Ankara area. Keep a very sharp eye out for them, and slow down when you see them by the road, or in the fields, and get ready to dismount. Often they just want something to chase. I think that they sense your fear, or lack of it. Whilst living near Ankara, I regularly chased packs of dogs away from our housing estate, to protect my wife's cats. However, the Kangals used for guarding sheep etc, are really fierce; think Hound of the Baskerville on stereoids; walk away slowly, keeping the bike between you. Having said all that, in two years of walking and cycling around the country around Ankara, I only really had problems twice; once chased by a very intelligent Kangal, that worked out it could cut across country to get ahead of me on a bend; and once by a dog I hadn't seen that suddenly appeared, snarling, by my ankle, which got a mouthful of cleat.
Since moving to Cesme, on the Aegean coast, I've not had any dog problem; there's plenty of them still, but they just seem to laze about all day; so a tour up the Aegean coast might suit you. Cycling along roads next to the deep blue of the Aegean has much to be recommended, especially in summer, when you can cool off with a quick swim.