Clear instructions for smooth after hours check in. Zebra double ensuited room: Very clean, comfortable beds [linen provided & you make the bed yourself], quiet room, good shower pressure, fast hot water, big TV, many English language TV programs, pedestal fan, well equipped communal kitchen [no freezer], several nearby supermarkets, close walk to Skanstull Tunnelbana [Subway] station, helpful staff. Suitcases fit under the bed. Long daylight hours did not hamper sleep as hostel is one level underground, therefore no windows. Would stay again and recommend to others.
Tip to easily and cheaply reach Arlanda Airport using SL transport pass or single ticket:
1. Tunnelbana from Skanstull to T-Centralen takes 4 mins [ lines 17, 18, or 19 ]
then look for signs from the platform for Commuter Rail
2. Commuter Train from Stockholm City [ perhaps platform 1 or 2 ] to Marsta Station takes 37 mins
3. exit Marsta train Station to Bus stop A for Bus 583 towards Arlanda Airport takes 11 mins