We stayed in Elenas villa Repsimia for a week as a family with two kids and had a great time.
The house is large, very stylishly decorated and has all the amenities we could have wished for. There is a nice garden (with great herbs growing in it!).
The beach is very close by and actually really great ! Getting there only takes three minutes by car or so. It's also close enough to get there by foot ... though we didn't really want to walk the sidewalk-less roads with the kids. Many other beautiful places are also easy to reach by car (e.g. Phaistos, Matala).
There are multiple guest houses on the property, each with its own outdoor terrace. However, there were no other guests while we stayed there (we visited in April, which is decidedly off-season), so we basically had everything to ourselves (which our kids loved).
Altogether, I would fully recommend staying in Elena's Villa.
I would fully recommend staying here