An allotment of hotel rooms has been prebooked for the Verona Eapm 2018 Conference. Here is the link where you can book the hotel room according to your requirements:

Please note: although the Conference is going to be held during the Arena Opera season, there is a good availability of hotel and B&B rooms in Verona, either in the city centre or outside Verona.
Please also consider that most of the hotels don’t have the real room availability yet online for Summer 2018.
If you wish to use other booking reservation portals please note that they tendentially do not give availability many months in advance.

There is also a large variety of unique and homely B&Bs in Verona. Please see the Bed & Breakfast Association of Verona website