I'm a short person 5'O" (well I was for most of my life, old age may have changed that) so approx 152cms.
I have two different surface heights in my sewing room. Largest expanse @3metres, and the height is 77cms, used for/with sewing machines and coverstitch machine. It comprises of two office desks which fix together.and accommodates at least 3 machines with space for fabric as used.
A separate unit height is 77cms in height with a pull out pivoting section with a height of 74cms Used for/with overlocker and and blind hemmer.
Lot's of storage space beneath
A Horn Hobby Chair with adjustable height/tilt etc. allows me to 'scoot' between the areas depending on which machine I am using and I adjust the chair as required so no issues with varying heights, makes life very easy.
I've had various Horn cabinets over the years, the largest was a Sewmate 2, very like the current Horn Superior, just short of £1400 today. Airlift, storage for machine and overlocker, pull out side extension a lift up area to the back. Yes, I could close it up and close the doors but to be honest it was in my sewing room so what was the point? Two machines accommodated no more space.
The units I use today are more than adequate for my needs and were all free!
The Horn Hobby Chair is great but I'm sure there are other chairs available with the same capabilities and far cheaper to purchase.
Covers for the various machines protect them from dust.
That's my set up.
Everyone's situation is different, space, number of machines, whether they have to be put away between use, all affect choice. I find the very versatile chair allows for better utilisation of the more fixed and rigid limitations of desks, work surfaces and cabinets.