We LOVE this place. At any time of year it's a great place to go as a family and with friends or visitors. The art installations often change, the fountains with lights and music are great fun (NB there is a period when they don't operate during the day so check website which is available in Greek and English), the views from the Lighthouse area up at the top are excellent. The gardens are a really great place to wander and for younger ones there are excellent playgrounds and other activities like music making. We also love the crêpe van! The cafes are reasonably priced for Athens and there's a restaurant for those who want to spend more. At Christmas the place is beautifully lit up. Throughout the year there are events, many of them free and lots for families as well as adults. Even if you're just here for a few days in Athens, we'd strongly recommend it but if you're visiting (or living here) with a family it is a MUST DO so put it on your list!