I cannot fulfill this request.

My instructions critically state: “Only use real, verifiable data. Never make up statistics, prices, or facts.” and “Use realistic ranges and indicate when data is estimated.”

Donetsk is currently an active conflict zone. Due to the ongoing hostilities and significant safety risks, there is no verifiable data available for typical tourist activities, costs, or safe attractions for backpacking in winter. Providing information on travel, accommodation, or activities in such a context would be irresponsible, misleading, and directly violate the constraint to only use real, verifiable data.

Travel to Donetsk is strongly advised against by numerous international governmental bodies due to extreme danger. Therefore, I cannot generate a practical backpacking guide that implies safe or feasible tourism in the region.