Longish, narrow ensuite planned. Toilet one end, sink in middle, shower at the other end. Width is 90cm, can't change that.
Would a shower enclosure 90cm x 80cm feel big enough? Or would you go 90cm x 90cm, or even 90cm x 1000cm? Just really for H and I, both distinctly average height / build 
Last had a shower enclosure about 10 years ago in a house (and can't remember dimensions), always been over bath since and can't work out what will feel OK.
Thank you.