Hotel rooms can be reserved ( by the participant), e.g. at
Hotel Arcadia, ~700kr, Koersbarsvagen 1, tel +46-8-16 01 95, fax +46-8 16 62 24
This is the closest, which we recommend.
Other alternatives are
Stockholm Plaza, ~1000kr, Birger Jarlsgatan 29, tel +46-8-14 51 20, fax +46-8 309 925
Park Hotel, ~1400kr, Karlavagen 43, tel +46-8-22 96 20, fax +46-8-21 62 68
Hotel Oernskoeld, ~900kr, Nybrogatan 6, tel +46-8-66 70 285, fax +46-8 667 6991

Directions from Arlanda: Bus to Cityterminalen and then subway to the stop Tekniska Hogskolan=Royal Institute. Hotel Arcadia is on the exit Koersbarsvagen at this subway stop. STOCHOLM TAXI charge ~350kr from Arlanda, some others more.