When I was there I visited the birthplace and there was a woman there who I questioned about this. I told her that it has been rumoured that this wasn't really the birth house and it wasn't even in the same location at all.
She then told me that it was indeed the same house, but that it had been moved a little bit to this location. It is still on the same road, only just up a bit.
But she did assure me that the house is the real house but it has had a few changes to it since, like a new roof and I think she said new floors but I just can't be sure of this bit.
It's hard to know for sure when things are rumoured but I'd like to think that what she said is the truth and it is the real house.