Poop is a constant battle and your best weapons are coverings. I have a few places in my house where the birds "poop over the edge" of something. I put newspaper down in those spots. I keep my couch covered with a soft, fuzzy, and most importantly, machine-washable blanket.
Keeping them off forbidden areas is a bit trickier and depends in large part on the surface involved. One of my birds kept landing on the TV (I get it - it was winter, his feet were chilly, and the TV was warm). I blocked his access by running a line of aluminum foil along the top edge of the screen. It's shiny and light, and if he flies too close, the air currents move it around in a way that spooks him, and he no longer tries to land there. I also had to watch him at first to make sure he didn't try to chew the foil, as it can be toxic. I've heard of people using balloons in a similar "scarecrow" fashion, although I haven't tried them myself.
As a general rule, though, instead of focusing on where he shouldn't land, try to set up lots of fun places he CAN land and work on making them fun and alluring so he actually wants to go to them. Stuff to climb and play on, toys, foraging opportunities, water features, etc. For every place you block off, set up an acceptable alternative.
You can certainly have a functional home with birds. Beautiful? Eh - that depends on your definition of beautiful. As long as you like the look of bird toys and rope nets and boings, you'll be fine. If you're going for a Better Homes and Gardens spread... some people seem to make it work, but personally, I decided long ago I could either be house-proud or have pets. I don't have the energy for both.