What a fantastic place to spend a day or two, Cemaes Bay.
Because it’s tucked away at the top of Anglesey it doesn’t seem to get too many people going and all along that coastline are great bays (watch out if you have a dog with you as beaches do have some bizarre restrictions like imaginery lines which you can’t take dog over!). Great place to go for food is the Ship Inn but we also liked the Harbour Hotel.
If you get the weather it can’t be beat (imho).