Here you can find a number of useful links to offical statistics for Stockholm and Sweden.

 

Swedish websites (Tourism)

Accommodation Statistics for Stockholm/Sweden from Statistics Sweden (in English): 

http://www.statistikdatabasen.scb.se/pxweb/en/ssd/START__NV__NV1701/?rxid=c171ee71-7524-4479-9b8a-cc19d1ec070d

News within the Travel Industry:

http://www.besoksliv.se/

Another website for news within the Travel Industry:

http://www.travelnews.se/

The official website for the destination Sweden:

https://visitsweden.com/ 

Stockholm Media Bank - lots of photos/videos about Stockholm:

http://mediabank.visitstockholm.com/

Stockholm Toolbox - written thematic guides about om Stockholm (40 texts):

https://professionals.visitstockholm.com/planning/toolbox/

 

International websites (Tourism)

Industry intelligence platform to key sectors of travel:

https://skift.com/

European Travel Commission:

http://www.etc-corporate.org/

European statistics of Tourism (Eurostat):

http://ec.europa.eu/eurostat/statistics-explained/index.php/Tourism_statistics

The VTO (Virtual Tourism Observatory) of the European Commission:

https://ec.europa.eu/growth/tools-databases/vto/

The World Tourism Organization:

http://www2.unwto.org/