This is by no means a comprehensive guide to the gay scene in Edinburgh, I don’t really know the right / trendy places to go, but will give you a few ideas.
http://www.pride-scotia.org/ 27th June 2009
http://www.ardmorhouse.com/ Gay friendly accommodation
Their favourite places to go in the city are at http://www.ardmorhouse.com/guide.html
and gay guide at http://www.ardmorhouse.com/gayguide.html
http://www.bluemooncafe.co.uk/ 1 Barony Street, Edinburgh, EH1 3SB