Mariefreds Camping

auto-translated: The campsite is situated with a direct view of Gripsholm Castle.
Check-in was very friendly even though it was busy.
There is a small shop and a café.

As I had one of the spacious but expensive cabins, I can't judge the sanitary facilities for the other campers.

You can only exit with a code.

auto-translated: The campsite is located with a direct view of Gripsholm Castle. The staff at the reception are very friendly. If you are lucky, Lena will even assist you in German at check in.
The reception even has a small shop and café. A boat rental is also part of the campground.
The pitches are rather small for Swedish standards. Because of the location, the sun is behind the trees in the evening and it cools down quickly.
The sanitary facilities are okay.
WiFi is available in the caravan and camper area.

auto-translated: Nice facility on the lake with a view of Gripsholm Castle. Public transport connected to Stockholm, we wanted to take the train from here sightseeing in the national capital. Parking, city toll in Stockholm are beyond good and evil ... Unfortunately, we could stay only 1 night, because the place was fully booked at midsummer.