Hop on- Hop off is fun only once in each new city. I use it as transportation from landmark to landmark. But, sometimes it's fun to climb aboard, grab a seat on the topless upper deck & take a ride around the entire loop.
Helsinki is a small city & has a great public street car service. So, I prefer the streetcar while visiting Helsinki. Plus, one particular streetcar has a full bar inside. Hop on- Hop off has no bar in any of its buses. It would be a lot cooler if they did!
I found the buses to be clean & the staff friendly.
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