People tend to check in during these times:
Nice cafeteria, good lunch.
Do not talk to the natives, they are all part of some sarcastic open source cult. Use of protective gear is adviced indoors.
Attend a meeting
Nice short term workspace up on the 7th floor.
Try a wild mushroom soup in Sodexho restaurant
Building 1 (Itämerenkatu 11-13) is now closed for good; work continues for now at Building 2 (Itämerenkatu 9). After the summer, Otaniemi!
The toilets make an excellent getaway from loosing your market share with lackluster devices. :)
Open spaces and good coffee. Avoid eating here.
Quiet room on B2 is amazing. Relax for 20 min in a massage chair, listen to music of the nature.