home office in a hallway
If you don't have space for a proper home office, or perch for your computer, why not consider your hall. Even if you only have a foot or two, you can tuck in a table that acts as a desk when you need. Hopefully you won't be working at your desk when guests are over, so the chair can simply be put aside when not in use and the flow of the hall remains. Check out these pretty awesome examples.