There are some great fan-designed 3D models, many very faithful to the original blueprints, that a snapshot could work quite well for a tabletop battle-grid. Credit always goes to the 3D modeler. I only add missing bits and a bit of colour. Search here for the full series.
This series of Defiant Class rooms is created by West_Sage. Last week, his model for the Bridge was showcased. This is Defiant‘s Mess Hall. No modifications needed. Take a look at this excellent model: