I have not set foot there in a long time. Last visit was pre-covid times.

Accommodation-wise, there are many locals there offering Airbnb - i'd say it would be better than any of the hotels there.
Yes, i have stayed in Grand Kampar, and no - i will not spend to stay there again not that it is bad, just nothing to shout about - and staying in the local airbnb helps-out the local folks there.

Food-wise:-
*the location are tied with Google Map, and pix are in the spoilers. Goodluck, and enjoy!

Morning breakie -
好運淶茶餐室 Restoran Ho Wan Lai, the "HK" chee cheong fun there is good - but i have not a clue if it still operates or otherwise hopefully there are locals here to verify



Lunch/Tea -
金保36档小贩中心 (36 STALLS), there's a variety of food here, but i frequented Kedai Hoong Kee for their fried 'fishballs' and next to them is a stall selling good asam laksa there are stalls selling ice kacang as well, if you need something to beat the heat



Dinner -
Kampar Food Centre (FoodCourt/Market), mostly come here for PORRIDGE, KUEH-MUIH and appam (idk if the old couple are still around, but if they are, the appam is crunchy goodness!)


Hope this helps too, the video is in 2019, but definitely more recent than my last trip