Howdy!
There's a new button in houses! The "Grid" button. Press it and it will show a grid over your entire house level. Press it again and it will hide the grid. If you leave your house, or reconnect, it will also hide by default.
When the grid is enabled, the furniture snaps to the grid like normal. But when the grid is disabled, the furniture can now be placed 100% anywhere and there's no snapping.
Check it out for yourself and let me know what you think! Maybe we could add different grid options for different size grids. Or even choose to enable snapping if the grid is off too, so they're separate buttons. Anything!
Here's a picture of it in-action on my iPhone 6+