From Chicago:

I-94 towards Detroit to exit 108 (I-69)
Take I-69 North to I-69 East
Take I-69 East to M-24 (Lapeer Rd exit)
Take a Left on Lapeer Rd (North) and proceed to Caro
Take a Right on M-81 and go 3-4 miles to Colwood Rd
Take a Left on Colwood and take it til it ends
Take a Right on M-25 and take it 5-10 miles
Take a Left at the Mobile Station, which is Cresent Beach Rd
Take this 3.6 miles to the water tower
Take a Right on Shore Drive

Cottage is up 200 yds on the right (Blue house)

From Detroit:

I-75 North to Auburn Hills and take Lapeer Rd exit
Take a Right on Lapeer Rd (North) and proceed to Caro
Take a Right on M-81 and go 3-4 miles to Colwood Rd
Take a Left on Colwood and take it til it ends
Take a Right on M-25 and take it 5-10 miles
Take a Left at the Mobile Station, which is Cresent Beach Rd
Take this 3.6 miles to the water tower
Take a Right on Shore Drive

Cottage is up 200 yds on the right (Blue house)