If you’re traveling to the conference venue by cab, show the driver the following (University campus) address (3):
ul. Krakowskie Przedmieście 26/28
The buses 116, 122, 175, 178, 180, 195 and 503 will take you as close as it is possible to the University; the bus stop is called UNIWERSYTET and is just in front of the University gates.
If you’re staying within walking distance from the main University campus, it will certainly be a pleasant walk through Warsaw’s historical area. If you’re staying at Logos Hotel or anywhere near the river Wisla, remember that you can access the main University campus not only from Krakowskie Przedmieście street, but also through its “lower” gate at Oboźna 16 street.