Digit Chioggia in your preferred browser (www.booking.com, expedia.it, www.tripadvisor.it, www.trivago.it, etc.) to find hotels, pensions or the more abundant bed&breakfasts in Chioggia. You will find more solutions if you digit Sottomarina (twin town at a distance covered by foot, bike or bus). Venice is at one hour distance by bus.
Book in advance if you want to avoid accommodation problems (full tourist season also in late August)
Bed & breakfast
Piccola Venezia Room
Bed & Breakfast San Domenico
Palazzo Carlo Goldoni
Hotel Grande Italia
In addition there are some other hotels in the close neighbourhood of Sottomarina:
Hotel Mediterraneo (Sottomarina)
Hotel Post (Sottomarina)
Hotel Nettuno (Sottomarina)
Hotel Ragno D’Oro (Sottomarina)
Please see this map www.google.com/maps/d/u/0/viewer
for the location of Palazzo Grassi in the historical centre of Chioggia and for all the sites of interests for the Meeting (hotels included). The walking way from the bus stop to Palazzo Grassi is highlighted.