We also bought an 80's (decade that style forgot!) 2nd house & have been renovating over the last couple of years. Lots of red feature brick, dark wood, slate floors (ugh), dark. In most of the brick areas we rendered then painted Dulux Lexicon 1/2, where there was brick adjoining built in wardrobes we painted the brick. Also beadboarded over red brick walls dividing the main spaces. Painted all of the dark woodwork - beams, skirts, archs & doors Dulux White on White. The slate however was a major undertaking to remove. Did this in the dining & kitchen areas as there is clear delineation between these spaces & the main living area. Jackhammer, lots of noise & dust. Slate remains in the main living area as it's too big an expanse to contemplate going through the removal process & mess again. Have used light coloured rugs on those floors. Believe you can get slate ground down to flatten out bumps then cover it with tile or a floating floor. However if there's any drumminess in the slate it won't provide a reliable subfloor for another covering. In the laundry & bathroom we tiled over the slate, as these were smaller areas. Looks fine & you would never know it was there. Lighting is critical, but you'll find as soon as you eliminate some of the dark brick colour light will reflect rather than being sucked into the space. Here are some before & after images showing comparison, out of the dark & into the light...

What's you budget like? If possible, think about floor to ceiling mirror sliding doors! They definitely add extra value to your home, are classic looking so it will never go out of date, they can compliment any existing interior design you choose and make the bedroom appear a lot bigger as well! If your budget is small, you may either have to paint the doors a colour to compliment the space, or you can attach mural wallpaper that you can peel off at a later date, or just replace with new doors that kind of look like frosted glass, but it's not actually frosted glass at all! All the best in your reno! :-)

If this is just a budget improvement then I would try to fix the cracked tiles and missing grout, paint the window frame white and add white shutters on the window, paint the vanity white (although I don't like doing that either) and get new handles and taps, toilet roll holder etc., install a lovely white potted plant, as shown above and white fluffy towels. A new white frame on the mirror or replace it with a slightly smaller white framed one. Then I would save up for a white stone bench top or stone overlay bench top and the cream will go nicely with all of it. Unfortunately your shower seems to be the most dated part. If you try to change the door you may find that you have missing tiles, although new floor tiles in the shower would probably look OK and add a glass hinged door. Good luck.

Diane..you sound so much like me...even down to the .."it doesn't have a style yet"...I have a similar wardrobe and was thinking the exact same thing on the weekend? ie. what can I do to it to not have a dark timber wardrobe in my room...although mine got wet when i moved it and now some of the veneer is peeling off, so it really needs help....I had only considered wallpaper or painting (after veneer taken off altogether which may wreck it)....i will be interested in seeing what you do with it... Maybe the fact that you room doesn't have a style yet, means that you should do something to the wardrobe that lends itself to a classic style or is a fairly blank canvas, so that you can add the style later with art and bedspreads, bedside lamps etc....(I have no design sense at all, but just thought it may be a way to do something now and not have to decide on a particular style yet)