The Quality Hotel Panorama is OK. My room was small, but had everything you need. I stayed three nights for a conference nearby. The reception was very friendly. The Spa was closed because of renovation. Breakfast was good.
To walk to the city centre, let us say the Borsen (town hall) you need to take like half an hour. But it is a nice walk, partly through a parc, partly along one of the main shopping streets.
I recommend to tallk a boat tour to the Archipelago from Lilla Bommens hamn.More