Closest public transport is the Pendeltåg at Odenplan (Vanadisvägen exit), back for southbound travellers, front for north. 

Otherwise exit at S:t Eriksplan (Torsgatan exit) on the green and walk up S:t Eriksgatan. Don't take the green to Odenplan, the walk is longer! 

I'm a little teapot, short and stout...

To make the most of one of your hash friends working in a pub, there will be a short(ish) r*n, and lots of Stout! Beerbliotek's Big Ten range will be on offer at heavily discounted prices for hashers - a reduction of 69kr!! ;-) Many other beers are also available for those who aren't fans of stout.