Positives:
Jackie and Nikos' place is as described - very quaint, comfortable and cozy. I loved the views from the apartment and the private balcony was the prize winner for me.
Didn't meet the hosts since they weren't around but their grumpy porter met me at the bus station in Oia, showed me the apartment hurriedly and left.
The stairs weren't a problem for me since I love exploring on foot, but you need to memorise the route back to the house since it might get a little confusing.
The house had clean plates though the toaster was dirty. The pans were also a little sticky because of old oil probably, so had to wash them every time I wanted to cook.
A few things that definitely need improvement:
1. No cleaning services were offered on any of the days, though they kept saying the maid would visit (I stayed for five days, & they've mentioned on the listing that cleaning services are provided on the third day)
2. The apartment was a little unclean - there was a dead, possibly fossilised cockroach near the water boiler which was my roommate for all 5 days.
3. I'd specifically asked the hosts to send the porter to carry my luggage bag up at 11:15 am on the day of my check-out, there was no sign of the porter until a good 11:45 am & I ultimately had to lug my bags up myself, which was extremely hard and annoying. I still haven't heard from the hosts about this - no apologies or follow-ups or 'what-happened' from their end. I don't know if they're even aware this happened, which is not good customer service.
I know it's not a hotel, but the hosts should deliver on what they've promised. The house was generally very unkempt after 3 days and it wasn't pleasant to come back to an untidy house.
No shampoo or conditioner was provided either, which was a little inconvenient.
My stay in Santorini was generally a nice one because it's a beautiful place with beautiful people. Again, the apartment is generally good and the heater was a boon, but the hosts need to step up their services.