Destination Stockholm/Stockholm a la Carte
by YPie
I booked my hotel accommodation through Destination Stockholm which includes a "Stockholm a la Carte" card. This is very similar to a Stockholm Card as far as I can tell.
It gets you free transport, free boat trips (this is only on selected departures though for some trips so make sure you plan ahead and book yourself on one of the free trips to avoid missing out). It also gets you into a load of museums including Skansen, the Royal Palace and Drottningholm, but not the Vasa Museum.
Of course you can buy a Stockholm Card and a separate accommodation package, but why do that when a package is available that cost me no more than a room only deal would have done elsewhere. Maybe it helped that I was travelling alone and groups wouldn't get such a good deal, but for me it saved me bags of money, and my hotel (the Esplanade) couldn't have been much better, another option was to stay on Malardrottningen, the boat moared off Riddarholmen so you're not sacrificing anything in terms of the quality of the accommodation either.
Definitely worth checking out!
The picture is Drottningholm - get there and back for free on the boat and get in free too!
Riddarholmen
by Pieter11
At the West of Gamla Stan, the small island of Riddarholmen, Knight's Island, is situated. It's also part of the historical centre of Stockholm and is completely filled with the most beautiful old buildings.
The central square of the island, the one you enter when you cross the bridge, is Birger Jarl Square. Here you can see a statue of the man who founded the city of Stockholm 750 years ago. Around this square you can see two large palaces and the impressive Riddarholmskyrkan.
What you really should do when you are in the city, is have a walk along the island during or right after sunset. From the westside of the island you'll have a fantastic view of the Malar Lake, of the other island of the city and of the Cityhall that is just at the other side of the water. You'll see the very small alleys you can walk through, with the original cobble stones, and for the rest you'll most probably won't see anything at all. After sunset this island is very quiet, and a great place to relax.
At the southern banks of the island there is a big, white ship called Malardrottningen. This once was the private yacht of the American millionair Barbara Hutton, but today it's used as a nice hotel in the very centre of Stockholm.