ok obviously you're going to go here because it's a big tourist place. however my biggest tip is to go at night, after sunset for sure. then you don't have to pay to actually go up on the walls & you get to see the city at night which is so sweet. there's way fewer people and it's great for pictures as well as getting that good travel feeling (yknow when you feel adventurous and independent and all that)
budapest faves (circa 2018)