Meeting Room / Venue Suggestions (Oslo)

Can you suggest any small venues that I would be able to run a small casual group meeting from? affordable / low cost very important

I'm trying to organise a group of between Protected content and wanted to find somewhere nice and relaxed, easily accessible by public transport in Oslo.

Access to a projector would be great but not absolutely necessary.

If not a meeting room, something like a really good coffee shop would be fine but would need to have room for me to present and not disturb other patrons too much etc.