I'm from a country where the washing machine typically would be in a separate laundry room downstairs or in the bathroom. DP is from a country where it would be normal to have a separate laundry room upstairs. Both of us find it slightly weird and unhygenic to have the washing machine in the kitchen.
There is no poss to have a separate laundry room downstairs.
We are doing a loft conversion. We plan to move the boiler up under the eaves anyway as it is where the new stairs will be. Would it be crazy to also move the washing machine and dryer upstairs in the loft conversion? This is our forever home so have no plans to move for the next 20 years so not too concerned about what a future buyer would think.