Try Ourguest.in  
 They curate tours as well as stays across Sikkim as well as NE India.

Founder

If you have friends in the army pls ask em to help. Sikkim with Army especially North is another level.

Brand marketing manager

Has anyone been to Sikkim , especially North Sikkim. Planning a trip to North Sikkim, and hence any leads for good tourist agencies or any other relevant suggestion

Has anyone been to Sikkim , especially North Sikkim. Planning a trip to North Sikkim, and hence any leads for good tourist agencies or any other relevant suggestion is welcome.

North Sikkim Trip