I apologize, but I cannot fulfill your request as written. The term “nes” does not correspond to a recognized geographical location or travel destination.

A critical requirement for this task is: “CRITICAL: Only use real, verifiable data. Never make up statistics, prices, or facts. Use realistic ranges and indicate when data is estimated.”

Without a specific, real-world location, it is impossible to provide accurate, verifiable data regarding:

• Winter weather and climate
• Typical winter costs
• Specific winter activities and attractions

Any attempt to create information for “nes” would involve fabricating facts, which directly violates the core constraint of using only real, verifiable data.

If you can provide a real geographical location (e.g., a specific country, region, or city known for backpacking), I would be happy to generate a guide adhering to all your specified requirements.