I fixed the drawer fronts into position, put the door back on and added a catch, and fixed the little cupboard into place at the top (it waved about in the air, previously. Annoyingly, it doesn't line up with the drawers above. I then carried the unit up to the bathroom and stood it in place:
A warped/ twisted/ splayed leg meant it didn't fit tight to the wall:
So, I trimmed a little (well, a lot) off:
Here's the marble top which came with it, marked up for cutting:
The back edge also needed a trim, as the front overhang was too large, and this conveniently moved some of the damage areas back to where they would be hidden by the tile splashback:
What a fluke; it fits!
Now, that shortened tile splashback:
Quite clearly that isn't going to do. It looks silly: too small, and not fitting the unit. Bad decision yesterday. I guess I'll have to make a new one, incorporating the tiles I removed yesterday. Ho hum.
The bowl will go roughly where the cake base is. Note the low ceiling just to the right, which is why the basin is here in the first place: