This waffle stitch is definitely up there as one of my favourites.
Once you have the hang of the pattern you can just relax and enjoy the process. Not so much counting this week ;-) I used a 4.5mm hook with my merino soft yarn.
And here it is in my Beach Huts colour scheme. This square has been blocked! It's pulled in a little on the bottom edge but that's fine. Once all the squares are joined it'll pull into shape. The main goal is to make sure the edges all are the same length. The weight of this yarn will even out any curved edges.