We have stayed at the Oasis, on at least 8 occassions- it is lovely, the hosts Nikos and Maria are very accommodating, nothing is too much trouble- ever.
We always have the ground appartment, which does have a fridge, so does the 1st floor apartment. The rooms do not have fridges, but they can be hired.
We have done the walk up the hill lots of times, it is quite nice, at least it gives you a chance to walk of all thoes extra calories, that we all put on while we are on our regular stay.
We have stayed in Plakias at the latter end of October, and we had lovely weather, but we all know how it can change from day to day, but I would certainly go back again in October.
We are sure that you will find Oasis and Plakias both lovely.
If you have any further questions about the Oasis, you could always e-mail Maria, the e-mail can be found on the interkriti website, under accomodation.