We went to Lake Kournas mid October with our toddler and baby and enjoyed our stay at Villa Cressida very much!
Nikos showed us around and was our to-go-guy whenever we had questions. The owners Nikki and Dimitri made us feel so special. The fridge was filled with items for hearty breakfast and the kitchen was well stacked with essentials. They left welcome gifts for our entire family. The bathroom had plenty of shampoo, lotion, etc.
The place was very clean, every 3 days the cleaner came, provided new towels, etc. the pool got cleaned every second day, though we didn’t use it much as it was a bit chilly for October.
The town Mouri itself is small and nice to spend a few days. There are tavernas, souvenir shops, paddle boats, but you’ll need a car/taxi to get to supermarkets, stores, etc. The nearest town is Georgioupoli, 10 minutes drive, it has also a nice shallow beach, good for kids.