Oh excellent, thank you, it looks lovely! I have been to many of the suppliers but QQ is too far away for me with a screaming baby in the car and they won't mail me samples! Once I choose a stone mason I will view them in person because I hear even with Quartz each slab can be a little different. I was thinking maybe Lexicon quarter...warmed up a bit...but I'm not sure. Thanks for the warning, I do have time on my side so I might go get some sample pots and see what actually looks ok with our lighting.

We installed a skylight over shower (velux fixed) in a tiny ensuite and I would highly recommend. It looked absolutely amazing and was heavenly to shower under the sky. We only had the house for a year and sold it (about to install another skylight over shower in our new house), so I can't comment on the long term, but no mould problems or condensation drips. I think if anything the sunlight was actually helpful to dry up moisture. We live in Tasmania so I'd doubt condensation dripping would be a problem elsewhere. We had a fan installed not in the cavity with the skylight but just on the ceiling next to it. In the second bathroom we put in a skylight over bath and put an extractor in the skylight cavity as the ceiling was higher. Could not feel a draught- so I think the question of where to put fan really depends on ceiling height. Do the skylight over shower!! You will not regret it. It really takes your bathroom to another level and there are really no maintenance problems if installed properly with custom flashings. I found velux quite repellent of dirt etc, we did not need to clean after a year (one flat roof skylight, one very large sloped) and I have seen velux skylights looking great with no cleaning for 7 years plus.

I don't think there is too much wasted space here. As you say, if you are trying to avoid having glass in the shower (which is always my aim too), and have privacy for the toilet, and a "spaciousness" for the flow-through in front of the vanity, plus access to the outside, the extra space you are using is so that you can achieve the aims that you want for your bathroom. There could be more compact designs that could be used if you didn't want all of those things, but sometimes the extra space is necessary. If you made the external door slightly narrower you could shave some off the walkthrough area in front of the vanity, but you might end up feeling cramped. If you can afford the extra space within your budget and this gives you a pleasant feeling every day when you use your ensuite, it's not really "wasted". I'm having similar dilemmas with my ensuite design right now, so I understand how hard is is too balance all the factors. Having said all that, if Daniel has an alternative that meets all the criteria but would be more efficient, I'd like to see it too, as it might help me with my design.

the measurements look more like a hallway space..challenging but never impossible and any internal room can always be improved with my favourite Solar Skylights (try Illume or Arcol brand available at major hardware stores) but, if you're planning to retile and adding another room there's no better opportunity to see if there's any opportunity to rearrange the space to a more comfortable shape..post a plan including of all the adjoining rooms and the new room