The basic stages are Coimbra to Sernadelo to Agueda. From Agueda, a few options like Albergaria a velha/Albergaria a nova/Branca/the watermill, depending on how far you want to walk.
Sernadelo has an albergue with private rooms available (Hilario)
Agueda,(Sao Antonio & Residencial Celeste) up the hill from town.. There's a garden area and patio, relaxing vibe and good laundry facilities
Branca has an donativo albergue, a homely vibe, a fully stocked kitchen and dinner is included.
I've heard good things about the water mill albergue near Pinheiro de Bemposta, it was a toss up between that and branca for me.
My stages from Coimbra were, Sernadelo, Agueda, Branca, Santa maria de feira, Porto. Ah, good memories.
I started earlier at Tomar, so I already had 4 stages of walking to warm my legs up, no need for you to do the same as me..
You do you.
Accommodations easy to organize with gronze, email and whatsapp. Had no issues with any language barriers doing that.