Water, water, every where, And all the boards did shrink; Water, water, every where, Nor any drop to drink.

The best thing about Iceland was the water.  Check this out:

Hot:

Except for the east coast, which is the geologically oldest part of the island, all their hot water is geothermal.  So it's endless.  Or it's at least as endless as Útgarða-Loki's drinking horn, anchored in all the seas of the world, that Thor tried to drink empty in one go.  You can take a hot shower for EVAR. By the time we left, I was taking two or three hot showers a day.  Plus because of the mineral content it smells to varying degrees of sulfur, which I find hugely soothing.

Cold:

Whenever I see somebody in San Francisco buying bottled water instead of drinking the tap water, I feel a combination of pity and despair.  San Francisco's water is straight from the Sierra Nevada, Hetch Hetchy, and is some of the best tasting water in the world.  But after every place we've been in Europe, now know that it's not the best, because Iceland's tap water is absolutely sublime.  It's all glacier water, some of it filtered through miles of bedrock.   It's sooo good.

Their local mass-produced beer is "Gull", and is truly nasty.  I finally realized the correct thing to do is skip the beer and just order water with ever meal.  Sooo good.

I'm going to open a restaurant in Iceland that just serves water in different forms.  Hot water, cold water, ice water, ice as cubes, as snow in a bowl.  And it's going to rock.