The islet on Lake Pamvotis nearby Ioannina is referred to as "Nisaki" (Νησάκι = Greek for "little island"). Inhabitants call it "Nisi" (Νησί = Greek for "lsland"). Nisi (or Nissi) is a small island - 800 by 500 meters - in Lake Pamvotis. It is one of the two lake islands in Greece, which are inhabited. There is only one village - with a couple of hundreds of inhabitants - on the island which with picturesque paved alleys and a lot of tourist shops and restaurants.

Nisi is well known for the Ali Pasha Museum and its monasteries. The first one was built at the end of the 13th century and the island was important monastic center.

The island is accessible by boat from Ioannina (about 10 minute-ride each way) or by a ferry from a nearby shore.