The center of Turku offers a myriad of hotels and almost all of them are located within walking distance of the city center and the conference location, Arken. Remember to book your hotel well in advance, there tends to be great demand on hotels in Turku during the summer.
Centro Hotel offers affordable accommodation in the city center, near the conference venue Arken.
Sokos Hotels offers two hotels in the city center, Original Sokos Hotel Wiklund and a smaller boutique hotel Solo Sokos Hotel Turun Seurahuone, and one by Kupittaa railway station, the nearest train station to Arken when coming from Helsinki, Original Sokos Hotel Kupittaa.
Looking for something different? The former prison Kakola has been turned into a boutique hotel. At Kakola Hotel you can spend a night in an actual former cell.
There is also a number of Airbnb places to stay in Turku.