Blender is great, almost too great as it is a very complex system. If you're going to make beds, chairs, etc. look into MilkShape. It is a basic 3D modeling program, but it includes a great system for placing textures on the model without having to unfold. You create the textures in Gimp or Photoshop and save as the .DDS file format that Game Guru uses.
You select the faces that you wish to texture then open the texture editor where you will see your texture. Draw a selection box about the portion of the texture that you want to apply to the selected faces. Repeat this for each section of the model and your texture is applied and ready.
MilkShape also has two great .X export modes that work perfectly with GG. MilkShape is $25, but well worth it.
"THERE IS NO SPOON"
AMD 6300 6 core 3.5 ghz, Windows 8.1, 8GB ram, GTX 650 2GB ram