Artemisia is a wonderful host. Quick to respond, and very helpful. The apartment is lovely - much bigger than it looks in the photos (could very easily accommodate 3 adults or a family). The little balcony that looks out over the square is just perfect, and the aircon is efficient and quiet. It's well provisioned throughout, although a small waste bin in the bedroom would have been helpful. The bathroom was impeccably clean, and the shower is very powerful. The door is slightly tricky, but feels very safe once you get the hang of it, and the bed in the main room is a tad squeaky, but it's incredibly comfy, and I slept very well!
The location is both excellent and bit of a nightmare. The apartment is right in the middle of Capo market, which I loved. It's super close to almost everything (except the station). It was only a 10 minute walk to all of the main sights, and it's so pretty! The little square outside is gorgeous, and hosts an excellent restaurant (not to be missed). The neighbours are welcoming and pleasant, and very willing to help. It's also very easy to find/get back to at night, however, it isn't quiet.
The apartment is in an historic building, so the soundproofing between the apartments isn't great. You can hear almost everything above and to the sides of you. It's also less than 100y from a significant church. My advice would be to carefully check the local religious festivals as I wasn't able to relax in the apartment in the evenings 19:00-00:00) due to the booming pop music coming from the church. It wasn't a fault of the apartment (for all other local noise the double-glazed doors more than blocked the noise), but it did mean that early starts were more of a challenge. I think I was just unlucky.
That being said, I would definitely stay there again! It's so convenient, and as a single female traveller, I felt incredibly safe. Artemisia couldn't have been more helpful, and it was excellent value for money.