Laugarásvegi 71, (see map)
104 Reykjavík

and in Víðihlíð by Kleppsgardar (see map)
104 Reykjavík

Bus routes:
Route 14 stops at Sunnutorg (nearest to Laugarásvegur 71).
Routes 12 and 16 stop on Sæbraut (nearest to Víðihlíð).