Ian, what's out of scale? For example the sink you used is by "ceramica Flaminia" (it's called "twin column") and it's, real size, 85 cm x 42,5 cm, the lamp is by "Louis Poulsen" (it's called "artichoke") and has a diameter from 60 to 84 cm. So, as you can see, your image is wrong. From a comparison your tiles are around 40x40 cm with mortars at least of 2 cm. Never seen tiles like that. In comparison with your sink, the books are less than 16 cm tall... And I don't know about so small rectangular tiles as those in your shower.
So what's out of scale? Almost all... 😉

thanks i rendered with vray and i was trying to make it look like a morning
scene i will try some changes on the backdrop see i cant make the trees more subtle. Then i agree on the floor it seems plastic.

Really nice render, which application did you use and for the modeling su offcourse. Did really made the compleet envirement 😲