After breakfast at the hotel,I will take you to local villages and go see their market Phsa Rolous, the only real local market in Siem Reap! Not a touristy but not for souvenir, just looking their local people daily life.

Kompoung Pluk, one of the 4 fishing villages by the lake Tonle sap in Siem Reap. You will see tall houses build on stilts about 6-10m high to avoid flooding, the local fishermen daily life and Beautiful flooded forest.

The Rolous group: Bakong, Preah Ko and Lolei. Those temples are the early start of Angkor history. I think it’s good idea to start temple tour with those temples.

On your second day, I will take you to Banteay Srei, small temple built on low base platform which very easy to walk around for old people. Banteay Srei is one of the most beautiful temple in Angkor.

Phnom Kulen, the holy mountain of Cambodia and it is birth place of the great Angkor empire. You will see 1000 Lingas carved on river bed about thousand years ago, Angkor king made it to convert fresh water to sacred water by Hinduism believe.
Big reclining Buddha carved in from big rock in 16 century.
And finally, the great waterfall to swim for good luck and refreshing.

I like taking to see sunrise at 5.00am, I know it is early but it is really worth it! You will have a chance to take great pic of Angkor in beautiful light. When most people return home or go elsewhere, it is the best time to explore this great 12 century temple, less crowded with nice and cool weather.

Return to Hotel for breakfast and refreshing.
At 3.00pm, to south gate of Angkor Thom and Bayon. Bayon is number one tourist favorite temple of Angkor temple. There are many smiling faces of Buddhist King Jayavarman VII/ Buddha. Most people said it is the smiling of Mona Lisa of the east!

It time to explore the jungle temple! These late 12 century Mahayana Buddhist temple are not much conservation and restoration so the temples are ruin and overgrown with big tall trees and vine. It look like great nature claim human building after people had abandoned it!
It is low base temples not much steep step, i think your parent will like them.