Surely nobody can fit into that space between the ironing board and the kitchen cupboard? It looks about 6 inches wide.
The description of the rooms seems odd. Talking about there being radiators in rooms. That's not a selling point, surely?
I think your friends should look at why they want to move (I'm assuming too small as they've had children?) and dress it to suit the tastes of potential buyers. I think young professionals looking to buy rather than rent would be interested so there needs to be two double beds.