I have been asked by Saal to order one of their books and do a review on the quality. Here are my thoughts:
When you go onto the website there are a number of different options you can consider from photobooks to calendars. In order to complete a book you need to download their free software which give the templates and design function for the book. I was asked to complete a Professional Line book on this occasion but I have completed many other books with them -my preferred size is the A4 landscape with the extra thick pages.

The software is well designed and allows you to have a great deal of control over the design process. You can use the templates or create your own pages and choose hundreds of background colours and patterns. Once you have designed your book you upload it and around a week later the book hits your doormat.

The quality of the books is very impressive and you can choose different cover options and thickness and quality of finish. Back in the day when we used a company called Graphistudio for our wedding albums they were considered the best in quality. Saal Digital comes very close at a fraction of the cost. I particularly like the lay flat pages which allow images to go across the fold.
I would have no hesitation in recommending them for your photobooks. I have been using them for a few years now and have always been impressed.
Here is their website https://www.saal-digital.co.uk