The accomodation for you in Prague (before and after the Spring school) is arranged at the dormitory house "17. listopadu" at Troja. It is the same place, where does the special bus leave from.
The address is:
VSK 17. listopadu
Patkova 3, 182 00 Praha 8
You should be able to get your accomodation by just checking in at the recepcion desk at one of the two buildings of "17. listopadu". We recommend you to try the builing A (=the taller building, it is nearer to the bus stop). There is no meal ordered for you in Prague.
Dormitory on map. It is possible to switch into ortho-photo version so you may get a better idea of how does it look like.