Pictured is the Argolic Gulf and the Saronic.
Below are some photos to give you ana idea what the country side is like.
You are much more likely to run into 'traditional' Greece in this area than most islands during the summer.
Below Left: Tolo's beach (Argolic), Center and right: Old Epidavros (Saronic)
Left: Galatas from Poros, Center: Methana, Right: Assine Beach.
Left: Town of Assine, Center: Village of Korfos, Right: Iria Beach
Below: the coast near Iria.
Left: Porto Heli, opposite Spetses, Center: South to Arcadia's Astros, Right: Arcadia's Tirou.
If you have your own transportation these are some of the very nice areas you can visit in the Peloponnese. Quiet mostly with no hustle and bussle its a good bet you'll find a nice little hide-a-way to relieve stress!