If you walk from Violet to Aspava, you can pick up the Huzerevi dolmus( it generally has a blue route board), this will take you past Sunday market. Get off at the point where it turns left with Bim on one corner & Alo 24 on the opposite corner. Bostans is just opposite Alo 24, by Sultan's Pastenesi. Going home, you may need to take the route descibed elsewhere, as this service finishes relatively early