The property is very nicely decorated and faithful to the pictures showed. The main bedroom is spacious, the second bedroom can easily accommodate two teens (we didn't hear any complaint from them). Both bedrooms have air-conditioning (but not the living room). The living room is very large and there is ample space for cooking. The best part is the terrace, which gives wonderful views on to the sea and its north shore -- we used it every evening for dinner.
The house gives to the street and we were afraid that it'll be noisy, but it wasn't a nuisance at all for sleeping and it was mostly quiet during the day and late evening.
The TV is modern, and you may want to bring a HDMI connector with you if you plan to watch movies from a laptop (which we did). If you're too tired for cooking dinner, just walk across the street and sit at a taverna terrace. Same if you want a quick dip into the sea, walk across the street.
The place is a bit far from the important sightseeing in the Peloponnese and around the Corinthian sea (Delphes, Mystra, Epidaure, loussios Gorges) and you need to count a good 2 to 3 hours driving one way to get to these.
The beach is pebble, not sand, as are all of them around the Corinthian sea. Sun exposition is good up till 5 pm, after that your in the shade of the village houses that borders the beach.
There also a train that goes directly from Kiato (15mn from the house) to Athens and its airport, which turns out to be very convenient. The owners are very nice and helpful, and our stay was very enjoyable.