Hi Cyla, it's a pretty stretch of coast, although perhaps not as spectacular as other parts of the Norte, and I also recall a lot of road walking and long stretches of nothing but a few randomly spaced houses, with nowhere to stop for a cafe con leche or snack. It's more remote and rural than other parts of the Norte, although there are some picturesque fishing villages such as Cudillero or Luarca. Oh, and a donativo in Tapia de Casariego which is on a cliff above the sea - the albergue itself wasn't very clean (the 3 times I stayed there at least), but there's something amazing about falling asleep to the sound of the waves!
Personally I found this stretch a bit trying: I think maybe I was just tired at this point (after walking for 3 weeks), but I think it's also because you get spoiled with geographical and cultural experiences along the Norte, and this section is a little less 'eventful' in that sense. Also, many pilgrim families have just been 'torn apart' when some branch off onto the Primitivo, and not many people start after Aviles, so I've found that the vibe isn't particularly 'festive' along this stretch - anyway that's just my subjective experience; it could be totally different for you!