Recommended hotels very close to the meeting venue:

Sheraton – 5* – (~168 EUR/night) 

www: http://www.sheraton.pl/poznan/

Mercure – 4* – (~96 EUR/night)

wwwhttp://www.mercure.com/pl/hotel-3393-hotel-mercure-poznan-centrum/index.shtml

NH Poznan – 4* – (~129 EUR/night)

www: https://www.nhpoznan.pl/ 

Another hotels – also close to the conference venue

Andersia – 4* – (~158 EUR/night)

www: http://www.andersiahotel.pl

Hotel Novotel Poznań Centrum – 4*- (~100 EUR/night)

www: https://all.accor.com/hotel/3376/index.pl.shtml

Hotel DeSilva Premium Poznań – 4* – (~72 EUR/night)

www: https://www.desilva.pl/poznan

Traffic Hotel – 2* – (~57 EUR/night)

www: https://www.hoteltraffic.pl/poznan/