Or just two loos?
We definitely need two loos. We currently have one upstairs bathroom with a decent enough shower. We're in the process of getting Builders to put in a downstairs loo and shower room but tbh I think I would prefer to have it as a downstairs loo with space for the washer and dryer. It's an existing room (old pantry) so there's only room for a 760 x 800 shower. There is not enough room for loo, shower and appliances. Washer and dryer are currently in the utility which is an old scullery that we intend to convert into a 'garden room' (it's at the very back of the house beyond the kitchen) and it would be much more convenient to have the washer dryer in the pantry/intended downstairs loo as it's more central in the house and I am using them several times a day. If we get them out of the old scullery it will make redesigning that easier as we won't have to fit them in.
Kids are currently small but my feeling is compared to the number of occasions two people will want to shower at the same time (and we need to check pressure will be good enough to handle that) is miniscule compared to the number of times we're doing laundry. DH primarily wants the downstairs shower so he can shower around 10pm twice a week after training without waking the kids but tbh using the upstairs bathroom doesn't wake them anyway.
So I'm wondering if there's anything I'm missing before I try to persuade him to use the intended shower space for appliances. As long as there's a decent sink, loo, mirror and shaving point etc in there, is a second shower REALLY worth it?
Sorry this was unnecessarily long for a post about showers!