Hi pesho,
Here are a few useful tips and tricks:
1. Use a prime lens with a relatively small focal length (e.g., 16mm on APS-C) to ensure a sufficient image overlap.
2. Use a digital camera (DSLR or mirrorless) with an APS-C or full frame sensor
3. Collect imagery at two different height levels, e.g. one photograph kneeing down and another one shot holding the camera above your head.
4. Make sure the room is well lit.
5. Manually set the white balance on your camera.
6. If you can cover transparent areas such as windows then do so before acquiring the imagery. Otherwise you won't be able to reconstruct these areas.
7. Use coded markers (TOOLS > MARKERS > PRINT MARKERS). Will make your life much easier... and they are actually more accurately picked by the algorithm compared to a manual workflow.
All the best.
Regards,
SAV