Funny to be able to spot a photolocation
this photo is taken at a Swedish naturist campsite called Gustavsberg, on the very first page on their site you can see the lawn that this photo was taken..
http://www.gustavsbergscamping.com/
and not only what is meantioned above but i actually know the person in the picture, she and her husband have their page on FLickr
http://www.flickr.com/photos/7387562@N04/