I'm not a fan of that black corridor, I once viewed a house with something extremely similar and it was depressing just passing through. What about horizontal mirrors and good lighting - something like this I've seen a far better one but can't remember where (if I do I'll pop back)
Thanks for all ideas - I was thinking of placing a full-length mirror at the corner, but you would be able to see yourself walking towards it and could be a bit spooky at night. I think I can probably cope. Maybe.
Rather than try and make it appear light and bright, which will be tricky, why not embrace its natural darkness and paint the walls a dark colour. It will make the rooms leading off it seem much lighter and the dark walls will be a good foil for photos/prints etc. A bit like the first pic here (if the link works ok) www.houzz.com/ideabooks/286206/list/Paint-it-Black
Looks like you will have to strip and line then . Light and space paint is good. For the pictures you could take lots of fast shots of a motif in motion eg child kicking a ball and put them all along the corridor.
What condition is the panelling in? The easiest thing would be 1 coat of primer and 2 coats of gloss in a light colour. That would make a massive difference and would hide the fake wood. Add some framed prints along the wall to give interest. Scandi look.