I prefer option 3.
I really dislike the feeling of having my back to the room, and the way a piano sounds with its tail in a corner. My piano (5’8”) is set so that my bench is in the corner, and I face the room. I did find that it sounded best when the piano was at an angle. And for me, the rug made a massive difference, but I have a lot of hard surfaces in the room.
Sound matters most, but feng shui matters too. Make sure you set things up so that you like where you sit, and you’ll enjoy your practice more. If you were not playing the piano, where do you enjoy sitting in the room? Put your bench there.