Hi,
Well, I can say that what you describe can be attributed to spirit activity, but it doesn't necessarily mean it *is* spirit activity. You'd need to rule out all logical explanations first. For instance... could there have been something logical that blew the papers around and blew the oil lamp out? A draft you're not familiar with yet (having just moved in)?
I suggest you start keeping a log of what happens, with time/date and any details. This can help you find a pattern, if there is one. You might also approach the owners to find out more about the cottage's history. You can ask without mentioning the strange happenings.... unless they ask you point blank if you're having odd experiences.
Kell