Budapest’s a steal—budget $70-120 a day for food, sights, and transport. September’s perfect: warm days, cooler nights, and festivals galore. Locals are friendly but reserved; say “köszönöm” (thank you) to score smiles. Book bath and Parliament tickets online to skip lines, and download a currency app—HUF can be tricky. Respect quiet zones in baths and churches, and you’re golden. This city’s a mix of grandeur and soul—dive in and let it steal a piece of you!