Karathona is the longest beach in Argolida about 3 km from Nafplio.
You can walk there on a nice path that begins at Arvanitia beach (about 45 min.), or drive via 25 Martiou Street. The beach is well developed, including several cafes and taverns, sunbeds/umbrellas and water sports, while there is also usually enough space for those who want to sunbathe in more peaceful surroundings. In summers, there is a bus connection with Nafplio.