Anyone recently travelled to Tvm by car from Kochi? Which is the best route to take?

I'll be starting from Kochi airport to Trivandrum. (and come back). Google maps shows a different route (not MC road). It shows Perumbavoor - Muvattupuzha - Pala - Kanjirapally - Ranni - Konni - Kottarakkara - Trivandrum Anybody travelled this route by car recently? How is the road condition?