Munnar is a hill station situated in "Kerala-Gods own country." I had been at Munnar in 2013 with family. You can reach there by bus after reaching Kerala. It is having very beautiful weather throughout the year. There are lots of tea gardens. You can visit tea factories also. They will explain how they are preparing tea and offer you to taste it. You can visit tea factories.
On the way reaching to Munnar, You will find lots of waterfalls which creates beautiful sight scenes on the road. Hotels are available there at affordable rates. You will not be requiring air conditioner there because temperature always remains low. It is the safe place.
The people of Kerala are very helpful and kind persons. Only thing you wont like is the oil which Kerala people uses to cook food. Otherwise it is the very beautiful place to visit in Kerala.