Hi Jo,
I have seen the dolphins quite a few times from our balcony at the Mathraki but only in the early morning. Also only seen them with binoculars, they seem to always be between San Seph headland and the open sea about a mile out I would say... so you could watch them from your bench as you have your quite time 😃
Last year the pod seemed bigger I would guess about eight to a dozen but they are constantly leaping about so I can't count them accurately😃😃 there are usually a couple of young ones as well.
When we stayed at Kaloudis for two weeks late last year I didn't see any so I assume they have different areas for different times of the year.
Good luck, Val x