This is a good temperary housing while you are searching for something else.
Stay in a cabin in Norderstrand in the northern part of Visby, 15 minutes walk from Campus Gotland. The cabin is 16 sqm with four beds, a small pentry and WC . Showers are nearby in another building.
The rent is 3700 SEK per month, if you stay more than one person in a cabin the cost is 500 SEK extra per person. Available until the end of May 2018.