15 kms a day means some puzzling
If I were you I should after arriving in Porto go to the albergue Monasteiro do Vairão
Look on internet /facebook
Send Carla the hospitaleiro an email . they have separate rooms
You can get there by metro from Porto center( if you like to stay there too) to Fórum Maia and walk from there to Vairão or go directly from the airport which is not too far.
Your next albergue is at 15kms at São Pedro de Rates where are common rooms
Or walk 6 km on to Pedra Furada. There i s a bar who rents rooms. I should give him a call for reservation on beforehand. His number is in John Brierleys guide
From there is 15 kms to Barcelos where are hotels,hostals, albergues
Next you can walk 13 kms to Tamel where is an albergue but better is to walk 18 kms from Barcelos to
casa da Fernanda. They have a common room but also 3 privat rooms I was there hospitaleiro 2 times. Ask Fernanda for a privat room. She speaks english. +351 914 589 521
Next place at 14 kms is Ponte de Lima with hotels,hostals and an albergue
Then you'll get the hard job, climbing the la Bruja mountain 18 kms to Rubiaês. Nothing in between only one bar to drink something
At the end are some hostals and an albergue and one restaurant..
15 kms from there is Valença do Minho with an albergue and several hotels
But there it is going to be busier because from there are the last 100 kms to Santiago.
Lots of Spaniards walk this distance in August so it will be a run on accomodation.
3 kms from Valença is Tui but I am afraid this will be full of pilgrims traveling to there and starting the next day.
Next at 20 kms is o Porriño with an albergue and hotels. Check out on beforehand for a place.
Next is Mos where is an albergue but here again many Spaniards
Then comes Redondela with a big albergue. Not my thing too busy. And some hotels but if you walk three kms on to Cessantes is a refuxio. Refuxio de la Jérezana. Look on facebook and reserve-very popular but hospitaleira Maria has one privat room .
Then You walk to Pontevedra 17 kms where are lots of hotels,hostals and an albergue
Then at 18 kms Caldas de Reis. Try hotel/albergue o Cruzeiro they have double rooms for an albergue price
Padron at 20 kms is the next with an albergue,hotels and hostals
Last but not least 23 kms further on is Santiago
maybe this helps you ou
Bom caminho