Here's the Zillow listing: it is estimated at $1m with a $5k/mo rental price.
516 Chief Justice Cushing Hwy, Cohasset, MA 02025 | Zillow
I agree I am surprised by the backyard. I am shocked by the pool. We looked at coastal MA houses last year when we were thinking of moving and while many of the houses were a little beat up in terms of the siding and older fixtures (New England charm), the yards were all generally very manicured with pools properly covered and fenced.
The price is surely a function of the location though the Zillow listing looked nice enough. I don't know how you'd let your pool get so bad though. It is a big investment to maintain and the freezing/melting of a full pool without proper chemicals and covering will destroy the surrounding brickwork.