All the rooms that are in a fit state to admire are off limits unless you rent the place for a holiday. The main hall is under restoration, so you can look at its fireplace and plaster walls. The best feature of the place is said to be the 700 year old gardens, but they look likely slightly unkempt gardens to me.
But don’t be downhearted – there is the delightful double loggia, built around 1630 it is a set of first floor rooms set on two sets of 8 columns either side of a screen wall. Now that is worth seeing.
At about the same time the main hall was built, and its undercroft is worth exploring. The Godolphins made huge sums from mining copper and tin from their estates surrounding the house, over several centuries, peaking in the 17th century, when Godolphin House was the grandest in Cornwall.