I have to agree with Crafty Countess about having a vinyl flooring. I would recommend Loose Lay by Karndean. The range comes in wood plank and stone tile effects, does not have to be glued down except around the edges of the room and damaged "tiles" can be easily replaced. They are made for commercial use, so are very durable and will retain their looks for years to come. From our own tenants, I've found that white or off- white works best. You'll never get a colour right for a tenant. In the past, we've hung curtains, which our tenants always ask to take down and put up their own. We've painted lightly fresh or richly cozy feature walls, which our tenants have asked to paint over. So we always use a neutral paint now. We allow our tenants to hang pictures, providing they repair and paint the holes when they move out and use wall stickups that they can take with them. The less colour you put in, the more you allow your tenants to make the space their own.

Hi Sarah, I imagine these windows could be treated in the same way as conservatory roof blinds with Pleated blinds. These would be available in blackout options. Alternatively, shutters can be made to unusually shaped windows like these and I think they'd make a really stunning feature of such lovely shapes! Here's an example: Enjoy dressing these beautiful windows, Zoe

American blind/shutters that fold into the deep window reveals should do the trick...

As you say shutters would be the most expensive so you are down to either blinds or curtains or both. If you are more contemporary with your choices then I would opt for blinds but if you feel as though you want something more fancy with texture then curtains fits the bill. I originally had curtains at my bay window but they were a pain to keep dragging around the corners of the pole so also invested in blinds which have been a godsend. We only use the blinds now at night but the curtains offer a 'frame' on the window as the lounge is on the front of the house so at least it looks as though we have something at the windows for passers by as you cannot see the blinds when they are up.