A warning ..
How long is a piece of string?
Road and track conditions change ... particularly dirt roads .. what was a good road two weeks ago can be very difficult (or impassable) now .. due to traffic and/or weather .. so what people say they experienced may not be what you experience.
Secondly - what one person decribes as "the worst road" may be correct for them .. but they don't have the same experience and knowledge as you. Nor do they have the same vehicle and load.
You are the best judge of what you can and cannot do - I'd just give them a try and see what it is like for me at the time. The desciption 'off-road' ... well I'd say it is probably more 'track' ... ie less used, and 'rougher' ... but still a defined path?
If you have not been there before then go and experiment ... with caution.
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S