If you are looking for hotel accommodation, we propose that you check for recommendations on the web site of Forum Fribourg.
www.forum-fribourg.ch/fr/visiteur/hebergement/
(in French)
www.forum-fribourg.ch/de/besucher/unterkunft/
(in German)
Hint: There are many possibilities in central Fribourg, but you will need to take public transport to the conference venue. If proximity to the venue is more important to you, these two hotels are within walking distance (100m) from the Fribourg Forum: