I stayed in Canaves Oia Suites 2 years ago and was upgraded to a honeymoon suite (although not on honeymoon
I thought it was pretty good in terms of hard product and service. We were given use of another room on the day of check-out due to late flight - room was in the hotel section and it was rather drab so best to book into the suite section. Canaves Oia is right next door to Katikies.