Consider using a hang on the wall basin with a built in towel rail underneath which will mask the pipework and save wall space. I would add a full size mirror on the wall opposite the window and add a cupboard above the toilet for storage. Removing the upper tiles will stop the space feeling so tall and therefore so thin and also less cold and sanitary - I like the bold blue - try it - you can always re-paint if you change your mind....if you can't afford a full wall of mirror consider mirror tiles (Ikea do 30cm ones in packs of 4) and these would adhere directly to the tiles saving that wall being chipped away at..sorry - just seen how old this thread is....wonder what you decided on eventually?

Back to wall pan concealed cistern with tiny adjacent washbasin works well but you need to source from a proper plumbers merchants, we use Plumbase or occasionally Graham's, failing that Bathstore are quite savvy, ideally you need someone who understands plumbing and layout dimensions.

I'd agree with Pat that using mirrors and other reflective materials will increase the feeling of light and space in the room. I'm not sure what budget you have to play with but you can get some amazing mirrored, shiny and textured tiles that used on all walls, floor to ceiling, for high impact would give incredible mood and personality to the room. I always think you can have some fun in a cloakroom! Decorative tiles and mosaics can work out expensive even in a small cloakroom - as a cheaper alterative I'd recommend using a mother of pearl pearlescent paint which will bounce the light around and hang a collection mirrors and pictures of varying sizes for a softer, eclectic and homely feel.

Hi, This is a really good question, we had looked into this for a customer who we were producing some bespoke tiles for for an under-stairs toilet. We came to the conclusion that a mosaic tile of 5 cm with a light design on it would open up the small space more than a larger tile would. Hope this helps?