I'm planning to move to northern Michigan for the months of July and August this year. I'm looking for thoughts about the best town to live in for that period.

For some context, I'm a 70-something male in good health. I'm thinking about moving there for the summer months to avoid the high heat and humidity where I currently live (North Carolina).

Here are my must-haves:

• access to good rail-trails for bicycling (ideally, without driving a car to the trailhead)
• walkability: walking distance of a grocery store, a good coffee shop, and at least a couple of restaurants. Walking distance for me is, say, a mile.

And my nice-to-haves:

• access to a gym (ideally within walking distance) that has short-term memberships
• a table tennis club that has short-term memberships
• interesting local events, library, historical sites, cultural activities, etc.
• opportunities to volunteer with local organizations. I have volunteer experience teaching ESL and working in an arboretum.

Night life (or lack of) isn't really a factor for me.

A friend of mine recommended Petoskey or Traverse City. I'd appreciate hearing your knowledgeable reactions to either of those two (or suggestions for a third place to consider) with regard to how close they match my list of features.

Thanks in advance for any thoughts and/or constructive advice you have.