For older and less fit people, the stair climbing may be a challenge.
Hotel is a short easy walk from the Aix-en-Provence train station. Quite a small hotel, right in the middle of the Old Town, the doorway building is stamped "MDCCCLXXXVIII" (1888), so you get an idea of the setting. Original building, 4-stories and basement. Winding stone staircase. There is no elevator, so if you have a lot of baggage, be prepared for a lot of lifting. With the cobbled streets, pastel colors of the building outside, fragile terracotta tile roofs all around, wooden shutters on windows made of slightly-blurry aged glass windows and the ancient timbers in the rooms on slightly creaky floors, it felt like we had walked right into the middle of a 19th century Impressionist painting.
While the view and surroundings look and feel Old World, the room has decent central heating and the shower / toilet is very new and modern. The beds are nice and firm. The staff were very friendly and were able to recommend a wonderful nearby restaurant - Le Bon Moment - to have dinner that evening. Breakfast the next morning was traditional French - baguette, marmalade and brewed coffee in a giant dipping mug. A wonderful, relaxing experience in an Old World setting.