Plyos is another old Golden Ring town. It's famous for being one of painters' favourite landscape subject. These days is more famous for Muscovite riches' nature-idilic playground. Beautiful in sunshine.
How to get to Plyos:
I wanted to visit Plyos on a half day trip from Kostroma and this sounded as doable. However, infrequent bus service(s) and a slightly awkward transfer is more likely to turn the excursion into a full day affair from Kostroma.
I bought the ticket for Privolzhsk at Kostroma; Privolzhsk is en route to Ivanovo or Vladimir buses. Important: these buses don't call at Privolzhsk bus station, but they dropped me off at the T-junction just outside of Privolzhsk. It was possible to wait at the opposite side of the road for a bus serving the Ivanovo-Plyos route. This worked for me. No idea if there are more regular and direct buses or marshrutka from Privolzhsk to Plyos. Indications are: there are not.
The above is an extract from my travel journals. June 2015