The 170 is a very nice flying aircraft with few vices. Ask if it has the original 170 gear or has been upgraded to a C 180 gear. The latter is a bit stiffer so it is a little bit harder to wheel land. Also check the brakes. The original Goodyear brakes are prone to fading which can be a pain in a long crosswind taxi. The Cleveland conversion eliminates this however they are much more powerful so care needs to taken that you don't wind up on your nose if heavy braking is used.
The aircraft can be either 3 pointed or wheeled on in pretty much any conditions. Personally I found it easier to wheel on with full flaps.
Like many Continentals the engine is prone to developing carb ice.