Note that one does not need to use a ten-seater table to play ONUW with ten people. There is only need for enough space to fit the centre board plus the cards of each player in a ring. A table or desk with dimensions of a metre each way is more than sufficient.
The players' seats are pushed out away from the table when conducting the night phase. Each player then has space to move forward, perform their actions, and lean back again. It can be more helpful to stand during the night phase if capable; the table can be put closer to those that require seating throughout.
If you so wish, and are resourced enough, markers can be taped or stuck to the table to indicate which card belongs to which seat, to avoid unnecessary confusion over what is moved where or who may look at which cards.
This has served for groups up to twelve, including relative newcomers and casual players, and could reasonably extend to groups of 15-16 without much more difficulty.