refurbishment
noun /ˌriːˈfɜːbɪʃmənt/
  /ˌriːˈfɜːrbɪʃmənt/
(also informal refurb 
 [uncountable, countable] /ˈriːfɜːb/
  /ˈriːfɜːrb/
)- the act or process of cleaning and decorating a room, building, etc. in order to make it more attractive, more useful, etc.
- The hotel is closed for refurbishment.
 - This is just one of several planned refurbishments.