@ValancyRedfern
Thanks everyone. Really interesting!
I love house 1. The one bathroom thing doesn't bother me at all. We only have 1 toilet now and there's only 3 of us. WE'd only be using the upstairs rooms as bedrooms and downstairs would be spare room and office or playroom. The main negative for me is the garden is smaller, and a garden is the main reason we're moving out of our flat.
House 2: DP loves but I think dining room is a corridor and why on earth does the kitchen have a toilet coming off it!?! It's such a shame there's no view to the garden from the kitchen. Even the other kitchen window looks into the weird not-quite-conservatory not directly outside. We could theoretical get rid of the utility/toilet and put in direct windows or bifolds out to the garden, but at that price all of our money would be tied up in the mortgage.
Neither are perfect but the location is and we're not confident of anything else coming up!
Re the downstairs toilet position, that's where my friend's layout differs. Where the
"weird not-quite-conservatory" is on this house she had a brick-built utility room / toilet, and where the toilet is on this house, she had a conservatory (well, a scruffy glazed lean-to really). The wall between the kitchen and dining room was open on the other side of the room, so still lots of light coming in (as the window shown behind the dining table didn't exist, her utility was there).
If you were really set on house 2, you could consider switching things about like that. The foundations are already in place, the biggest job would be taking out the wall and putting an RSJ in to take the weight of the upper floor. Fairly straightforward. The dining room would still be light, and you'd have a view of the garden.