Romantic Camping by the lakes

Hi all. We're a couple that lives in Europe and want to spend a week and a half in Sweden at the end of July or beginning of August, but are having a difficult time finding where to go. We'll spend a few nights in Stockholm, that won't be a problem, but we would also like stay at one of the many romantic lakes that Sweden has to offer, preferably no more than a four hour drive from Stockholm. We were looking at holiday homes, but the ones we found are for larger groups. We prefer nature and near a village. Any suggestions or do you know anyone who may have suggestions? A small hut is also great with facilities is also great. We just need a get away. Thanks!

In addition to my last post... I read many of the other posts, there is a lot of information on Sweden in this forum. Thanks! I'll take any recommendation on which towns are ideal with cabins by the lake surrounded by nature. If there are any activities that you would like to recommend, that would be great also. We love the water (swimming, sailing, boating, fishing) and forest (hiking, biking...) We'll probably spend half of our time in Stockholm and half the time in a cabin if possible. We'll rent a car, so we can also take day trips nearby or stay at different locations. Thanks again.

It's not a lake-side place but in the archipelago north of Stockholm (2h drive). Quiet, many possible activities (fishing, kayaking et c). Rävsten