The Smyril Line ferry takes 2 days from Hirtshals in Denmark to Seyðisfjörður in Iceland.

The first night on the ferry I slept really well last with the gentle sway of the ship reminding you you’re at sea. I woke up around 6am CET although stayed in my cabin for a little while as ship’s time is one hour behind, at Faroes time / WEST. For breakfast I went to the cafeteria although there is also a buffet restaurant which, while more expensive, has much more choice.