People (including me) are probably less kind to Decazeville than it deserves. A former mining town (its opencast mine was once one of the largest in Europe, but closed in 2001) its population is now less than half its post-war high. It has yet to find a replacement industry to replace the income from coal and steel and, inevitably, looks somewhat down at heel. When I last visited, in 2013, the large town centre hotel was closed but I found accommodation without any difficulty. Its real problem is that it suffers very badly by comparison with most of the other, very picturesque, towns and villages on the GR65, and especially Conques, officially one of the most beautiful villages in France (and, according to Wikipedia, the inspiration for Belle's home village in the Disney animation
Beauty and the Beast!)
I have stayed in worse places, but, if I was walking the Chemin de Compostelle again, I would bypass Decazeville and head straight for Livinhac-le-Haut. I would recommend purchasing the Institut Geographique National 1:25,000 maps for Conques and Decazeville (2338E and 2338O, obtainable in the UK from
Dash4it maps, or locally in Conques.) But, then, I love maps.
And, as someone has noted elsewhere, the French seem to love nothing more than climbing up and down hills. In fact, they are very proud of their hills, and they are determined that walkers should experience as many of them as possible. A large-scale map enables the thoughtful walker to avoid the occasional pointless detour.
Follow the GR 65 out of Conques, pass through Noailhac (or bypass it on the D580) and then follow the D580 west, but carrying on past the point where the Chemin leaves the metal road near Puy de Fraysse to Agnac. Take the Route d' Agnac west to a crossroad and its junction with the D218. Carry on straight across down the Chemin des Crêtes (signposted Les Bonnieres) ignoring the D580 turn to Decazeville. Walk down to Les Estaques and then either take the D21 to the bridge over the River Lot, or the Route de St-Roch to rejoin the GR 65, and the more scenic route, to Livinhac-le-Haut.
Bon Chemin!