I need 2 sides too - the front of the tub has the electronics and 3 of the 4 pumps and the side with the cover lifter has another pump.
When I asked the dealer where the 4 pumps were they told me in the front but when they delivered it I was informed it was under the filter.
Before I built the deck I could have rotated the spa to have the filter in the front but I really liked this setup better. The cover lifter doesn't interfere with any seat.
As for the pumps, they are easily accessable, the tub is 36" tall and about 23" off the deck - that makes the pumps about 13" below the deck surface. My friend and I repair (he is now retired - lucky fellow!!) medical equipment and we figured 13" below isn't too bad assuming that these things won't need replacing every couple of years. The pump that's under the filter has about 1' of clearance between the tub and railing - worst case scenario I could remove the rail section - again I'm hoping for a long life. And besides, probably after the warranty expires I will be the service man!
And I'll be cursing myself out!!
Originally the plan was to put a trap door in front of the tub for access.
The tub is actually sitting on it's own deck to eliminate any vibrations to the house.
If your interested in this you can see some (OK a lot) of photos at:
http://photos.yahoo.com/vinnynj57There's just enough room where the filter is to get there and lift the cover and change filters when needed originally I had thought that was going to be an in tub experience.
As far as the height - it really is a great height (any height between 18" & 26" is probably "correct") as you can sit on the side, swing your legs over and get in the tub very easily.