Just back from the camino, absolutely amazing, it is greener than anything I have ever seen before.
As far as I am aware, you have albergues in all those places you mention, but there are other options
Fuente Dé, is a camping site, there is nothing in Fuente Dé, other than two very posh hotels, the camping offers the hut to pilgrims, but the kitchen only has a microwave oven. I would recommend staying in Espinama instead, if you go for lunch in the Nevandi restaurante, Aurora will spoil you, she is an amazing character. The private albergue in Espinama is big, clean and beautiful, and has a good kitchen and garden. If you are lucky, Aurora's husband Santiago, or her brother Fernando, will offer to give you a lift to Fuente Dé for free, do not miss the cable car trip, it is spectacular. Fernando managed to fit all 10 of us in his Jeep, do not ask me how, but he managed. He gave us a lift to Fuente Dé for free, 3 km uphill, then we walked back to the village after the cable car trip. Last cable car trip is at 6 or 7, I believe, beware of that!
If you visit Fuente Dé in the afternoon, you can shorten the trip by 3 km the following day, along the gorgeous path that brings you to the Berrugas cottages. All in all, the experience in Espinama was unique.
The albergue in Lafuente is in neat condition, has a hospitalero, the only one we saw in the whole camino.
The Lebaniego part is not so well sign posted, you are better off asking locals, because you find red arrows all over the place.
Any other query you may have, please do not hesitate to ask, amigo!