Deliktas is very peaceful generally. It is also cooler than most of Fethiye as there always seems to be a bit of a breeze. You can feel the temperature difference as you walk up the hill, trust me you do not want to be in the centre of Fethiye in July or August!
Most building work has finished, roads are finished, there is a dolmus service every half-hour (every hour at weekends) until 19:25.
After that you need to get the Tasyaka dolmus and walk the rest (about 10-15 mins to the top)