I agree with jmm1837 and builders and designers are now realising that clients are spending more of their hard earned cash on clothes and require space to look after their dresses, skirts, suits, shoes bags etc. The key rule for built in or walk in robes is to be able to see and reach everything in your wardrobe. Wardrobe design is very different to kitchen design and it is worth investing in a professional wardrobe designers service to get maximum use of space. If you choose a Reach in or Built in wardrobe the doors are the main feature and make a statement in the room therefore style and finish is very important. If you choose hinged doors make sure you have enough room to open them, sliding doors take up less space. A professional wardrobe designer will work with you to custom design the internal fit out of the built in robe, how much half hang, full hang or 3/4 hanging you need, shoe storage and how many drawers you require. Fashions may change but style never dates, if you get the design right and invest in quality your wardrobe will last a lifetime.www.alliancerobes.com.au

I don't particularly like the sight line straight to the toilet. Don't forget towel hanging. I'm going to assume that triangular space to the right hand side is immovable? I'd also mirror the bedroom door to open against the Robe, and the robe door to open against the wall especially if you put doors on the cabinetry (otherwise you'll have to play door jenga there). Can the toilet go into the bath corner, and bath under the window, with a nice vanity for storage and layout space. And what wall treatment are you thinking for the curved wall, you won't get large tiles on it, will need to be fairly small or narrow ones to follow the curve. I'd square it up, the curve doesn't seem to reference anything else, and you'll gain some flat walls for hanging or full sized mirror etc (and be cheaper to build).

full sized double sliding doors will need wall space about 3.5 m wide ie 800+ x 2 for each door plus 2 x 800 plus extra for the frame for the doors to slide inside the wall...although a 1200-1600 wide opening might fit the space available to you (installing cavity sliders near where there's another wall at right angles can be a problem so cavity sliders must be included at wall planning stage, especially if the new rooms are being added to an existing building)...i'm also wondering if a horizontal window at ceiling height in the ensuite would allow light and also cross ventilation while still allowing for more wardrobe space...and, much as i love cavity sliders, as it appears you do have space available, i suggest a hinged door into the ensuite will better restrict moisture from your clothes and also provide a space for hooks to hang your robe

Our clients came to us needing more storage for their clothing. They had some dead space, right in the corner of their existing master bedroom, that was not in use. We came up with a few ideas and went for something that would maximise the most out of the space. We opted for mirrored sliding doors, which also added more depth and made the area look bigger than it originally was. Before: After: