Whilst described as a 'modern' library, this is really quite timeless, a haven for those of us who like 'dead tree' books whether we are in mediaeval times, somewhere in the far future or sometime in between. Especially when looking at the top-down battlemap version, where the style of the chairs and nature of lighting fitments is not so apparent - they are early 20th-century vintage and might jar a little if this is supposed to be the treasured library of a medieaval/fantasy lordling... or his wizard.
It's basically one long cavernous hall. The cover illustration and 360° view give a beautiful impression of a vaulted roof and the booklined walls. Pity there are no freestanding bookstacks - both a waste of space if you are thinking of how many books you can shelve and quite fun to dodge around if you are having a brawl in here. (Just remember to keep the noise down, this is a LIBRARY you know!)
Otherwise it is a good layout with comfortable chairs and a good table depending on whether you want to curl up with a good book or take notes as you study. I can think of lots of situations where this will come in handy. You get the choice of a square grid, a hex grid or no grid at all (with notes on which pages to print), plus an enormous single-sheet JPEG for virtual tabletops or if you have access to a commercial poster printer.
I'd recommend this even if it wasn't free... as it is, grab it!