Food picture with nikon d3000 inside a hotel?

How should i take snaps of food dishes inside hotel with nikon d3000?

If by "snaps", you mean snapshots… Then it doesn't matter as a "snapshot" is meant to capture a particular moment, it is not intended to be perfect.

On the other hand, if you wanted good images, then you need to shoot the food like you would any other product. Mounting the camera on a tripod, using a shutter release, and having plenty of available lighting handy.