I've had surgery on both shoulders and find having my machine down in the recess is much more comfortable. I have to work on it on table top when I go other places and can feel a big difference.
By the way, I found my small old sewing machine table "cabinet" with the top that I leave down for it's surface, in a thrift shop for under $20. It's perfect for my small quilt area. I always see at least one at thrift shops. They are my go to places for odd pieces of furniture. You probably should have your machine dimensions written down, and a tape measure, in your purse, just in case you decide to go in a thrift shop to check it out. Don't give up; some concentrate on clothing, others have lots of kitchen stuff, others have a big section of furniture. Good luck!