In France we have hired at Tonnerre on the Canal de Bourgogne but there were many locks, and we were always very busy, with a lock every hour, https://www.google.ch/maps/place/Rue...fa66aec8bae795
Another year we hired from Prom. du port, Saint-Jean-de-Losne, France. This was much better, boating on the River Sa˘ne, & going upstream, only about one lock each day. Highly recommended! https://www.google.ch/maps/place/Pro...975deb5743f258
There is also a boatyard nearby, at Gray, which looked even better, as some of the boring parts would then be avoided, https://www.google.ch/maps/place/Le+...90668a1392355e
Next to the rivers and canals is usually a towpath, it is worthwhile taking or hiring a bicycle, to get fresh bread from the village in the mornings.
It is worth keeping one room free for everyone: some boats have a bed in the saloon, day room, and in my opinion this makes life difficult: as every night everything has to be moved about and the bed made up, and then tidied away again before breakfast.
I have heard the Canal du Midi has very high reeds, and you cannot see very much of the landscape, maybe it is better now.