Any advice welcome! My sister and I (forties, if it matters) are planning a last minute trip to Budapest this month. Between 3-4 days, undecided yet. I'd love any tips on where to stay (she's suggested the old quarter, and will tend towards cheap), and things to see. The spa is a must, and we love museums, architecture, churches, mad public art, good food, nice bars etc. If anyone has any great ideas I can suggest to her I'd be grateful to hear them. Thanks.