Dear brother, based on my trip to Thandiani in summer of 2024, I would suggest you choose some other site for your trip. In June 2024 the road to Thandiani was being broaden and was in pathetic shape, there was no road just gravels and send throughout. Once we reached at the top we were highly disappointed to see that there was no lush green surrounding there. Its covered by varied kinds of Dhabas and the only reasonable staying option was Forest Rest House at the top. However, being highly disappointed, my family decided against staying there and after spending some time we went back to Abbotabad for a night stay.
It used to be lush green mountain top in 2014 (see below image) and my visit back then tempted us to go there again but this time it was an utter disappointment.