I would suggest going for the plain reddish/pink throw with the rose/floral pattern cushion. Keep it to just those colours as you don't want it to look too mismatched as that could give your small room a cluttered feel. To add some glamour easily, I would recommend more lighting in the form of some candles and also perhaps some fairy lights around the window would add something extra to the window alcove.

You may want to reconsider keeping curtains as well as the shutters, as they don't keep out all the light, particularly as you said the room is bright & south facing. Especially in the summertime when it gets lighter so much earlier. From someone who's been awake since 5am because of this problem! Note to self: must get round to choosing curtains! Also, F&B cornforth white is very pale. We've used it on the interior of our windows, but I think it would be a little boring if we used it on the walls, too close to white, especially in a room as bright as yours. A friend with very good taste recommended Little Greene's French Greys. It's a lovely warm grey & there are several different tones. Don't be scared of even the darkest one as even that isn't too strong on the walls! Our master bedroom used to be at the south facing front of a 30's house too, but after rebuilding we're now at the back of the house. Although I love looking out over the garden, I do miss that glorious sunshine you get! (Although not at 5 in the morning!). Have fun deciding, and remember you can always repaint if you really hate anything!

Gone through my album of our very own decorating therapy journey and found these. I hope you can see the roller black-out in the first photo, it's tucked inside the recess of the window. The Duette is a peachy colour which looks a lot lighter colour in the north-facing sun. The one in the five panel window is the room below, it does not have the roller blind but the curtains are black out. They are not as efficient in blocking out light as the roller in recess though. the curtains are from Hamilton McBride, only reason i got them were because not many wide (350cm) curtains are cheaply available on Amazon... If your room is not too cold, you can also consider wooden venetian, mine is in white colour as you can see from the 'blue room' (it's F&B's new Vardo btw), which is on the ground floor of the north facing side. 247 does oak colour too. Many neighbours asked us where we got those from!! They look great at a good price - those two windows cost me just under a £100 - but they are not the most energy efficient. They are okay blocking out light but if you have it in the south-facing room, it might not be quite enough. Do go to 247blinds and request some free samples, it's worth a try. Hope this helps! ;)

Argh, I love teal.... but in this exceptional case, the coral looks far more welcoming and comfortable as the bedroom