Polynikis responded immediately to our booking, emailed several times in advance of arrival to help with practical matters, and met us at the port and drove us to the house on our arrival (he also kindly drove us back to the port when we left). The house was as described, or actually rather better than described. It had all the accommodation and facilities promised, was decorated in excellent taste, and had everything one might need. Polynikis also kindly encouraged us to use his supplies of cooking materials, coffee, and so on, so we never had to buy any of the things that one commonly has to buy and then throw away unfinished. We were two adults in the main building with three older children sharing in the other building. One further person could have been added easily, and perhaps more if necessary, though that would begin to get a little crowded. The neighborhood is great: quiet and scenic, but only 10-15 minutes walk from the shops and restaurants of Apollonia. A great view of the sea from the terrace. It is possible to get to the various beaches by bus, and there is a bus stop very close by, but we made life easy for ourselves by hiring a small car, with which it was possible to reach most beaches in 10-15 minutes without needing to wait for the bus or change. Sifnos remains a perfect island, by the way.