Here's my tub, it's recessed about 24" below the deck. There are 2'x4' panels surrounding the tub which are framed into the constructed deck.
Also, on the long sides (since it's a rectangle,) I have a 1ft gap that I built a 'step' to cover the gap. If I need to repair anything, I can simply slide the step back as it just sits on top of the deck. If I need more room, then I can also remove the panels. It's super easy access. It's already come in handy as I've had to access the pumps a few times.
This is after I removed the old tub; you can see all of the panels here (dont mind the dirty deck, its getting powerwashed after the pollen drops
):
The new tub being installed; some of the panels opened:
Accessing the tub while installing the electrical
This same gap exists on both ends
Here it is with both steps built. I've since stained them the same stain that's on my house, and the white facia is the trim color of my house