I think there is a major need for this, especially for dare I say "new" features in this space.

- Daily Morning Lists of your meetings/attendies and attachments all rolled up

- SMS alerts for room/reminders 5 minutes before

I would recommend a few other insightful things - e.g.

- adding a photo of the room - labeling how many seats/chairs are avaliable - Integrating a raspberry pi or some other open source hack (ipad/andriod app?) to show what is happening in the room each day (scheduler)

I wish you the best of luck with this and think it's needed not just in coworking spaces, but every startup that has more than 3 conference rooms.

good luck!