You are using Route::controller and not Route::resource so it obviously fails because ::controller routes does not have aliases. As far as I remember you can pass third parameter to actually bind methods in controller to aliases(named routes) like:

Route::controller('rooms', 'RoomsController', [
    'update' => 'postUpdate',
    'stuff' => 'getStuff'
]);

etc. But I highly advice to use Route::resource as it is a cleaner way to manage basic CRUD and if you need something more specific you just add more complex route above the resource route like:

Route::get('rooms/something/{id}', ['as' => 'rooms.something', 'uses' => 'RoomsController@something']);
Route::resource('rooms', 'RoomsController');