The Friendly's near me was very dirty and run down for a good long time and one day closed their doors.
About a month later, it re-opened and the interior was spick and span and the food seemed to have improved. My friends and I were shocked at the changes and actually made bets on how long it would take for the place to look like it did before it re-opened.
To date, we have all losts our bets as the place is still super clean and food has not declined at all.
Dan