Furniture arrangement can either be fun or maddening. You can’t always change the basic structure of the room such as door and window placements, but you can do your best to work within those limits and put your furniture and other fixed pieces in places that best complement the overall look and flow of the house.
Traffic through the house is important. You don’t want to block a standard path with a big couch unless you’re specifically trying to divide an area into separate and distinct locations without the use of a wall.
Room divider screens can also be a big help if you’re working with a too-large space that needs to serve multiple functions. These dividers can be ornate or very basic depending on their purpose, the room’s style and how long you’ll need them.
It’s best to find a focal point in the room to work with as a cornerstone for the rest of the design, something like the tabletop water fountain. For many rooms this is the TV or a seating area. If you want that to be your main focus that all furniture pieces should point in that direction. Instead of a TV, consider making a fireplace or window the focal point if it’s available.
The diagonal of a room is the longest path, so if you group your pieces along that diagonal you can often give the illusion of width and greater space. This also helps to give something like a japanese platform bed two views, such as the TV and a window view.
If you have trouble search the internet for various layouts. You can even do online arrangements without any heavy lifting by using free software that some furniture stores have (like Slumberland).