Hi, I am glad you have had a good experience with cork. Friends of mine spilt water on it and it seemed to be very unforgiving with bubbles and warping never going away.

Room sizes are not to a set 'standard'. Some designers have a preferred size they like to stick to but it's not set in stone. 2700 x 4600 to me is a bit narrow and a bit long at 4600 but with alt's and add's it's how well the space is used, where are windows and doors, etc.. I prefer a kid's bedroom to be a minimum 3000 x 3000 + a BIR. (3000 x 3600) It's a size that is comfortable. There may be no other good options available to fit the brief so a 2700 x 4600 is a reasonable compromise.

Hi, regarding your tile size: if the floor and splash back tile sizes are very different, the grout lines won’t matter. But if it looks like the lines should, but don’t, match, it can be off putting. For instance, our splash back tiles are small, rectangular and laid vertically whereas our floor tiles are 600 x 600. Your eye, in this example, doesn’t try to “follow” the grout line. If it did and they were “off”, it could be visually dissonant, so I’d want tiles that were 100/200/300 or 600 wide. Not to say other tile sizes are wrong, just that you do need to consider the lines. Don’t forget though, unless you’re planning an early sale, choose what you love regardless of any “rules”. As for your grout, even though we used modern grout, we have also sealed ours with a product bought from a local hardware store. Early days, but highly recommended that extra step

Like everyone else -- there's so many factors involved . By the sounds of it , you want to really make a feature of this room , its presumably for kids , and without getting too sidetracked , have you thought about adding maybe a bar and a 'movie screen' and projector ? The bar then makes it adult and child use , but there's then the temptation for children to try a drink , but you are potentially doubling the usage ( obviously not totally suitable if the kids bedrooms are directly off this room , just a suggestion though ) . The projector and screen looks good , but also means you see it from anywhere in the room , so you don't have to worry about seating placement so much . As kids , Mum and Dad had more of a bar with a pool table , but Dad made us a table tennis table with things that sat in the pockets of the pool table , so we could lift it onto the pool table ( it had the net already attached ) , effectively halving the space required if you had both seperately .