This become more or less just a list of places and things. Usually these are the places what I recommend to colleges and friends visiting Budapest.
Eating and drinking
Caffees
There are quite a lot of good caffe places in the city. Check for a collection in https://europeancoffeetrip.com/budapest/
Espresso Embassy
https://europeancoffeetrip.com/cafe/espressoembassy-budapest/
https://maps.app.goo.gl/QwbfS6hLBArWR1mf9
One of the classic speciality caffe bars in 10 min walking distance from the conference location.
Zërgë Coffeeshop
https://europeancoffeetrip.com/cafe/zerge-budapest/
https://www.facebook.com/zerge.bp/
https://maps.app.goo.gl/L7cqj1YtbXmjpGgh8
An other good caffe bas on the Buda side, still no more than 15 mins distance from the InterContinental.
Mantra Specialty Coffee Bar
https://europeancoffeetrip.com/cafe/mantracoffee-budapest/
https://maps.app.goo.gl/2EK5dJTwS8SMk41m6
Another classic speciality coffee bar in downtown.
Nor/ma Grand
https://europeancoffeetrip.com/cafe/normagrand-budapest/
https://maps.app.goo.gl/E8p9JSr1qfFxikyH6
Speciality caffe and bakery on the Buda side.
Streetfood
hummusbar - hummus bar
...