Chris, I am not disagreeing with anyone about Brasov. Each to their own. I have aquaintance that come to Budapest and rave about some of the most average the city has. But its what they did and they loved it. Who am I to argue.
Brasov, for me (and who am I), was okay for a solid day. The first trip was a tour with an excellent guide and it was "interesting," the second trip, since COVID, was with a Romanian traveling companion and the drive through the mountains and a little snow in late March was beautiful. She knew where to stop, what to see, etc. That and the company made it a great trip. But the destination, again, was "okay". Peles Castle, yes! Even Bran Castle, yes! Brasov to sleep before we hit the road again, yes! Tge train. Its fine .... once. It was 2 hours late arriving which I was told wasnt unheard of. But for an experience, maybe excellent. The bus? No. I would do the train first.
My high points in Romania to date have been Sibiu and Sighisoara and i enjoy Bucharest more than many do. But thats probably because i know someone in town. But 4 trips and I have a lot left to see.
But since you have roots in Hungary, you should dig a bit deeper here. Kick it up s notch. Find some family context if possible and explore it out of your comfort zone. Really from Budapest or elsewhere in the empire? Family name?