It appears there might be a geographical misunderstanding in your request. Kolbotn is a town located in Norway, specifically in the municipality of Nordre Follo, Viken county, not in Sweden.

As per the critical instruction to only use real, verifiable data and never make up statistics, prices, or facts, I cannot provide a guide to free WiFi spots for “Kolbotn, Sweden,” as such a location does not exist. Providing information for a non-existent location would directly violate the core principle of using verifiable data.

If you intended to inquire about free WiFi in Kolbotn, Norway, please clarify, and I would be happy to provide a general overview based on typical availability in Norwegian towns of similar size, always indicating when data is estimated or generalized where specific verifiable local data is scarce.