For the mongoose and the man treasure quest, the objective is telling me “I should check his house”. I’m not sure what I am looking for in here though. I haven’t been able to find anything useful or quest worthy. The house looks pretty normal
There’s some diary entry that you need to look out for on the table. It’s next to the big chest that you don’t have a key to unlock yet. There’s a piece of paper that has a diary entry on it.