Warnermunde an unexpected delight. Gorgeous small seaside town with plenty to look at. During day we took train to Bad Doberan to take trip on Molli steam railway. Highly recommended and easy to do on your own
Took HOHO boat straight from pier, which took us directly to Vasa museum. Easily the must-see attraction in Stockholm. After that just walked around Gamla Stan (old town). Very busy but pretty in sunshine. (Would gibe the 'Changing of the Guard' at the Royal Palace a miss though as it goes on for hours!