I am doing internship this summer in Venice and looking for a apartment/room from august 4 to september 5

I am looking for a room or small apartment for myself from august 4 till september 5. Maximum price 500 EUR (with all taxes included). I am calm, like my privacy, would like to find a quiet place to stay. Can share apartment with only females. (But also calm person who don't organize parties). I work in the art gallery near campo San Barnaba, so would be great to find a place around here, or walking distance 20-30 min.