Potential windfall with complications

My grandmother is dying. There are weeks in it.

Her son (my uncle), died around a year ago intestate and she is his next of kin. He owned a house (shack) in a sought after location for holiday homes. His mates have tried to claim it. They are squatting.

Anyway, she has expressed her wishes to leave me this property. First question is clearly “are there going to be any major complications with inheriting?”

Secondly, what do I do with the property? It’s only going to appreciate in value (currently $800k) and I don’t own a house (recently divorced and walked away leaving my 50% for the kids).

Do I sell and buy? Leverage it for a mortgage and have another asset? Something else?