I visited the Monastery of Horezu WHS at about 8.30 on a Wednesday morning in early January 2017 by a rental car.

Anybody was able to enter the monastery compound freely for free at that time.

There was some sort of service going on in the main church of the monastery, in which photo is not allowed even without flash.

I walked around the compound to find a small chapel (photo left) further up the hill.

The entrance had double doors, a grill door first and a wooden door second. The grill door was locked, so I could not enter. But the wooden door was open, so I could see what's inside through the grill door. There was no sign for no photo, so I was able to get a snap of the interior (photo right).