If in the vicinity of Uruapan and/or Morelia, you'll want to check out Pátzcuaro, both the town and the lake. As part of your sojourn to Pátzcuaro (elevation 7,020 feet), take a boat ride to the Isla de Janitzio, located smack dab in the middle of Lake Pátzcuaro. The trip takes about 20 minutes one-way.
There's a couple of inns and businesses located on the lake's south shore that offer boat rides to the island (on motorized boats that hold maybe a dozen passengers). The rides are not on set schedule, but when the operator deems it is worthwhile to make the trip. That's the easy part. Even if the boat operator says he will be there at the island to take you back to the mainland at a designated time, don't count on it. Invariably, he won't be there when you return to the dock. But no worries, eventually a boat operator will eventually show up ("eventually" being the operative word).
Upon debarking at a dock on Isla de Janitizio, buck up, and start your walk (hike) up the streets that zigzag through Janitzio. Your aim is to reach the top where the 40 meter (131 feet) tall statue of José María Morelos (a Mexican revolutionary hero) towers over the island. On the streets between the water and the top of the island, there are numerous arts & craft shops, as well as small restaurants. All the proprietors will aggressively seek your business.
I do recommend stopping for a mid-hike snack, to enjoy an order of seasoned tasty tiny deep-fried fish that are caught from Lake Patzcuaro (you will see several fishermen in boats on your ride to the island). Note however - July through September is considered off-season for the island - and most businesses then will be closed.
When you get to the top, you pay a modest fee to enter the statue and climb its inside stair to the top. Murals of the Mexican revolution as well as of older scenes depicting lives of the ancient indigenous people line the statue's inside walls. Also, along the ascent to the top there are a couple little landings where you can poke your head out and admire the scenery and take pictures. Or, if you are a sassy Mexican schoolgirl, you can holler "Gringo" at the white guy walking down below in the plaza.
Upon returning from the island to the mainland, check out the town of Patzcuaro. Park near the main zócalo (plaza), which is the liveliest area in the city. Pátzcuaro, which is growing by leaps and bounds, is chock full of arts and crafts. These shops, which are situated next to or near the plaza, carry an inventory from inexpensive pieces made from local craftsmen to overpriced "modern" goods, where the shop owner might fly into a tizzy if you attempt to take a picture of any of the objects for sale. Several very good restuarants are located adjacent to the zócalo. read more