We had an amazing time in Milos. Perfect location in the heart of Plaka (we thought Plaka was the best of the main towns), amazing sunsets - 5 min walk to castle which is the perfect spot to watch the sunset and drink wine. It's also a short walk to the big car park on the edge of Plaka. Great restaurants in the area. If you're lucky you'll catch the old Greek men sitting on benches and arguing every morning in the main square.
We arrived hours before check-in but they still sorted a transfer from port, and met us at the apartment, they let us in to the flat earlier than the check-in time and were very accommodating.
Flat is very spacious and beautiful, especially bathroom and kitchen. The bench outside is nice but other tourists will come and for some reason look and take pictures or try to sit on it even though it's clearly someones flat(?!).