If I had to sum up Bucharest in one word, it would be “gritty”. A lot of it is not well kept up, but it also feels like it might have a hip underground vibe to it. The people are not as friendly toward tourists like Poland was, but I’m always appreciative to see new places.
I think two full days in Bucharest is sufficient.
For a third day, I recommend a day trip to Sinaia.
Draculas Castle is way overrated. I don’t recommend it.
Definitely stay in or near to the old town.
Use Uber. Taxis here are notorious for overcharging.
Do a free walking tour to learn some of the history and to get a feel of where things are at.
Be sure to try Romanian wine.