Kate's apartment is lovely and cosy and is in a nice little town. Kate's colleagues met us in the town square and we followed them (by car) to the apartment, where Kate was waiting for us. She is really personable and we enjoyed chatting with her. She was keen to make sure we were comfortable there. The apartment is a few minutes walk uphill from the car park and it's a few minutes walk in the opposite direction to the town square. Views are great from the terrace. The bed is comfortable and the linen and towels are good quality. I think the description of the apartment needs to make clear that the kitchenette contains a fridge, sink and coffee machine only. There is no microwave/stove/cooker.
I think this apartment would be great for a couple, but it's not really appropriate for a young family (although the same could be said for Santorini as whole, it's a place for adults).