There will be a fee covering the accommodation at the research station in Lammi (near Lahti). The fee will be around €90 (the exact amount will be announced closer to the start of Summer School). The fee should be paid to the course coordinator, not Helsinki Summer School.
The closest accommodation option is Pihlajamäki Summer Hostel, 20 min. from the course location on foot.
University of Helsinki, Viikki Campus
There will be a compulsory excursion to Lahti. The cost will be around €90 (this might change, so check in later).