I would recommend a higher bed whether ensemble or any style of base with top mattress or pillow top. I have had serious spinal injuries since 25 (I'm now 40) I would advise any bed reaching around 70cm in height regardless off style. There are a few things that I would advise, overall height around 70cm or a little more, most important to consider is comfort. Do not worry about aesthetics when choosing bed as your sleep is more important to your overall health. So if you can afford the more comfortable bed go for it. As for putting on sheets etc, the weight off mattresses is not really a big deal as it is your sleep comfort that is important. With pillow top mattress with a fitted sheet needing a 45cm fitted sheet are easy to find and purchase from same place bed is purchased. In Australia all bed sheet supplies are available for pillow top with 45cm drop fitted. Percale last longer and are around $100 per set and 1000 thread count. Spotlight have great sales and choices as well as Pillow Talk. I have found Adair's to be quite expensive in comparison but that is up to you to decide. I hope you have many a restful nights sleep. But do not worry about weight of mattress as you need your sleep to live healthy and it is an investment for around ten years so how it looks and weight of mattress should be last on list. Designers may disagree, but our bedrooms are normally our sanctuaries and it is rather easy to make any bed style work for you and decorate to your style.

It depends on the thickness of your mattress. I have a fairly standard height king mattress, on a ensemble base. I bought a standard AU king duvet and it shows a lot of mattress. Then bought a West Elm US king duvet and it's much larger. It covers the mattress, tucking in would be possible but your not able to tuck in a lot of fabric. I love the larger West Elm duvet, but they weren't selling well as the sizes were different from our standard, so they now only do smaller AU sizes. And the US West Elm site won't sell to AU... So I think if you want a generous duvet or quilt to tuck in. You may need to go custom made.

queen size bed is 153cm x 203cms and king size is 183cm x 203cms and there should be plenty of space for either depending on window and door

I think siriuskey's latest plan is better, as it extends length of double shower which resolves the issue of chute/cupboard combo door, and allows for a wider door into master bedroom. A wider door will be a more dramatic entrance to this large suite, so worth seriously considering. The plan does eliminate the linen cupboard; however. Personally, I would not want to store my bed linens in a bathroom simply because of moisture/steam. The generously sized walk-in robe has more than enough space for bed linens to be stored. That's where I stored mine in our last home. It was very convenient and only a few steps from shelf to bed. I stored all other linens in the wardrobe of upstairs spare bedroom, close to the kids' rooms. Re the double shower - I mentioned previously a 1.8m length is sufficient IF you have a glass sliding door that slides alongside track like a barn-style door. Hubby & I did regret not thinking about how awkward a hinged/pivot door would be. Current dbl shower is 2.2m and has the sliding door I described. We didn't request a longer shower, but the architect drew it up that way. Given my choice, I'd always go with bigger.