There are several hotels located within 30 minutes walk from the conference venue, for example:
Ibis Krakow Centrum,
ul. Władysława Syrokomli 2, 30-102 Kraków (ca. 1.5 km),
Novotel Kraków Centrum,
ul. Tadeusza Kosciuszki 5, 30-105 Krakow (ca. 1.6 km),
Novotel Krakow City West,
ul. Armii Krajowej 11, 30-150 Kraków (ca. 1.9 km),
Armii Krajowej 11A, 30-150 Kraków (ca. 1.9 km).
There are also plenty of apartments located even closer to conference venue. We advice to use booking.com or similar Internet tool to find your preferred accommodation.