Just because you have spent money renovating does not necessarily add the full value to the asking price. Make sure the price is realistic and be prepared to negotiate. A picture can say a thousand words so if you are using the Comprehensive Package that uses 2 photos make sure the photos reflect the best aspects of the property. Buyers will lose interest quickly and move onto another property. At the end of the day the buyer will probably want to view so arrange with the caretaker or local agent or friendly neighbour access rights.
Some French neighbours are wary of having the key and letting people into the property.