Fosshotel Mývatn
Hotel SpaMývatn, Northeastern Region
A 92-room hotel at Lake Mývatn with an in-house sauna for overnight guests only; no day-pass access.
$$
2 spas match
Mývatn, Northeastern Region
A 92-room hotel at Lake Mývatn with an in-house sauna for overnight guests only; no day-pass access.
Reykjavik, Capital Region
An oceanfront thermal bath in Kópavogur near Reykjavik, open daily with outdoor pools facing the sea and walk-in day passes.