The spa boasts nine wooden tubs in total -- seven indoors and two large-occupancy versions outside. And while they advise against drinking the bathwater, each tub does come equipped with a built-in draught tap for you to pour yourself a nice cold beer or two while you're lounging. They've also got an on-site restaurant with a panoramic view of the nearby Hrísey Island, mountains, and Þorvalds valley if all that relaxation leaves you hungry.
Before you commit to the trek there, you'd be wise to reserve a spot ahead of time since it's becoming an increasingly popular item on many visitors' Icelandic itineraries. In terms of pricing, you're looking at about $20 for a dip in one of the communal outdoor tubs, $65 for a private bath inside, or $120 for a couples treatment.