We booked a last-minute this summer to Kos and we stayed in hotel Silver Beach. This hotel was supposed to close for renovation at first but because there were still a few guests it remained open. So the rooms were a little old-fashioned. But the service and the location of the hotel were great! There was a nice breakfast ready for us each day, simple but tasty. The pool was fine too...just a little cold at first but you get used to it ;-) The beach was quiet, so there were always deck chairs available. You could also go for a good snorkel here!