Seeking tips/insights on what activities to do with 3 days in Budapest. WE will be traveling with an infant, but we're adventurous, and the kid is very well behaved during travel. Sightseeing, museums, restaurants, etc are all fair game!
If you don't have Rick's guidebook, you can see his prioritized list of attractions at https://www.ricksteves.com/europe/hungary/budapest. A key item that's not listed there is simply walking, whether with a private guide (about $100 for a half-day), a group walking tour (if they don't discourage infants), or on your own (maybe using resource that James linked above). A short river cruise around sunset is a purely tourist option, but gives you a nice view of the city.