The very tight valley has just one road in and out. Except for authorised vehicles, the general public must park in the pay-and-display parking lot at the top of the village. It is reasonably priced but is very busy during high season.
Park in Looe, and take the bus from the doctor's surgery.
From Looe, take the well marked coastal path. This lovely walk, takes about an hour to two depending on walking speed. However, the steep climb out of Polperro may prove problematic for some.
The walk into town from the parking lot is not very steep and takes 10 min. If walking is not your thing, take a cheap horse and cart or converted milk float "tram" that will take you there and back.
There are a couple of art galleries on the walk from the car park to the harbour that may be worth a visit. The coastal path to the nearby town of Looe also makes a plesant walk on a summer's day.
In the village centre is usual array of touristy goods and souvenirs that you would find in any other seaside town in Cornwall.