I held back on replying to this post when it first appeared as it was very early in the school year. Now I can speak having seen a bit more of the Alderbrook picture
I am a nursery mum at Alderbrook, and I only have good things to say. The staff is caring and friendly. They seem know the children very well, and they have impressive yet realistic plans for the curriculum. There seems to be a nice sense of community including children, parents and all school staff.
Also, if you say that your LO is not particularly outgoing, the arrangement with the separate EY Unit could be a big plus - and you have seen yourself that it is all brand new and bright.
Good luck!