Casa Elea is lovely, light and spacious and communication with the host is fantastic. Instructions on how to find the place are accurate and check-in is super easy too.
The shower has amazing temperature and pressure and it's a really nice gesture to have some optional, complementary toiletries.
There are two outdoor balconies and sea views. A mini-market and bakery are really close-by.
I found the main centre / harbour of Naoussa to be closer to 13-15 minutes' walk, with the bus stop being 8-10 minutes away (especially if you're new to the area or walk a little bit slower).
The road outside is quite busy but this isn't an issue if you're mainly out and about exploring.