I'm gathering you do not use that cement pad too often...
I would move the entry to the garden there and start the step stone pathway from that pad and descend from there...
for many reasons:
leaves the main view of a 'main garden' in the main view
leaves guests and yourself not walking directly into the view and house tracking schmutz everywhere in the house..
offers opportunity to install a large basin for good reason at the end of the deck/engawa as a washing of hands from lavatory and pond garden,
moves the dynamics to the aside - asymmetric if you wish- though really removing the -once again - line of force from the door, which is 'always' obliquely accessed and of course shifts the view coming up while allowing people at house to prepare for intrusion and people returning to gather their thoughts and shift to indoor thought, with a last clean view of a fine garden and a place they were... the pond area.
then, if you place a second walkway obliquely from that main walk, you could use your newly made pointy stones in a wide ___-------\ pathway to your 'private' place of entry... then you would also have reason to have gravel in the front of the engawa.. and the background, the reverse view, would give reason for the type and placement of stones - the garden directly off of the engawa.. echoes the pond
will you have an overhang put in to shunt the water over the deck/engawa, so that the black gravel drainage ditch can be put in at the dripline?
and this will frame the view as well as indicate where entries are...
etc. etc.. (take a close view of the garden you asked about.. it has a descending overhanging roofline...) edzard