PanicPants, did you see my link below?
It was hot, but not too hot. We spent Christmas there a few years ago, when our oldest was 18 months. It is a truly magical place. Not very touristy.
Just 10 minutes walk down a path from the hotel, past a hidden away hindu temple, you find the most lovely long sandy beach, in fact the beach that goes around all the southern tip of India.
To get to the hotel you drive 15 minutes through pure jungle in a safari vehicle. The next town is half hour away by car from the main road, and it is really nice, more crowds, but fantastic arts and crafts to buy, nice restaurants! Pineapple and coconut pancakes, yum! Beaches, tours, etc.
At the hotel, the chef would come in the morning and ask if you fancied veg, chicken or fish for dinner, so he could make his shopping list when going to the market!
There is Yoga, and Ayurvedic treatments.
I went for a Keralan foot massage. They dont massage your feet. The masseur was hanging from the ceiling of a remote bamboo hut in the jungle massaging your back with his feet.
I told my husband just yesterday, we ARE going back. We most definitely are.