Entirely depends on the stairs and what's under there. We live in a really old cottage and have a dog leg staircase with a half landing like that, which is also in the kitchen. On the edge of ours is a supporting wall for the landing. ( I'm a little intrigued as to what's holding yours up. ) Here' it is when i was renovating last year. I think, that if you ever decide to have a new kitchen, then i'd work with the space as it is, completely change the layout and design so that you work with it instead of against it, & build it in to the design. For now, i'd just go with what's been suggested above.

Lovely floor boards reminds me of Jamaica before the whole tile phase. Impressive looking fireplace. I wouldn't mind seeing some more of the space.

Fancy pulling up that lovely patterned carpet! Only kidding, it looks lovely. Well done.

Wow, what a beautiful space, with endless possibilities. - Opportunity to use a contrast in the smaller entrance and carry that colour through into the main hall area with the accessories-wall art, furniture. e.t.c.. - Under the stairs lends for the opportunity to become a design statement (see under stairs image lit wine cellar, with glass features) - In terms of wall paints: - Greens as suggested (sage or off-white sage green undertone is stunning), Baby Blue (image) Borrowed Light by Farrow & Ball or Bare Minimum by Valspar A cool toned grey (Benjamin Moore - Blue Springs) See the flooring and the darker contrast with the through room :) Color Family: Cool, blues, can lean into greys, greens and whites Complementary Colors: Peach, pale orange Pairs Well With: Most colors Mood: Calming, serene Off white's as suggested: think about the undertone and pigments and how much natural light the space receives during the daytime. - The opportunity to install an additional x 2 ceiling lights to compliment the black and glass light already featured in a row to create a modern feature and balance the space overall Please post some photograph of the end result, we cannot wait to see it Have a great day