I love how the colours in these would tie in with your dining rug as well as that beautiful inlaid chest and mirror..

If you want to stay with the Tiffany look you could try to find some small simple ones like these. Otherwise I like the idea of simple glass pendants with an Edison decorative globe.

Hi Jayrees, I totally agree with what Kat had to offer, I would suggest a non geometric pattern on the rug as the floor is already geometric, a light colour and subtle pattern if you prefer a pattern. The mirror should definitely be moved and I would consider a large light print to compliment the new rug and and drapes. It's a pity that the window screen blocks the view (it's a nice view) but the heavy screen is a necessity these days, I would remove the stickers from the glass to help with the openness. Just noticed that you have an air con in the room so you may be able to remove the screen.

Thank you everyone! Between you all you have summed up my concerns (changing bulbs, enough detail already in the stairwell, honouring the old house) and my desires (a nice lantern pendant or period light, LEDs need less changing, overhead lighting. I like the idea of the wall lights but we have not wired for this. There is wiring for for stair lighting (phew, glad we got that right) and one down light in the middle of the void. We have reconsidered a pendant as the one down light will be harder to change but are worried about obscuring the windows. Perhaps one of the simple fine-framed lantern pendants or white vintage light, on chains will be easier to change as we can pull it across to the stair, or a pulley pendant like this I'll post some more photos of our reno once its further on.