We stayed in the Castello for 6 nights. The location and views of the sea and city are great. Ortiga is a great place to explore the region from.
The apartment is well equipped and the ambiance/style great. We were there in late March so it was nice to be able to light a log fire in the evening but it was still warm enough in the day to spend a lot of time on the great terrace
So much nicer than staying in a hotel. We thoroughly recommend. Lucia also very kindly allowed us to stay late on our check out day and was helpful through out our stay.
The glass floors in the bedroom do mean that you have to know everyone else staying there well!