In the end, didn't get to stay at 'cosy nest' as I made a mistake with the booking dates (it was my mistake, not Marlene's).
However Marlene offered me alternative dates and was very kind and helpful during the whole process of arranging accommodation.
So I cannot give a review of the actual apartment.
However my experience with the host Marlene, I can say she is very kind, helpful and understanding.
Thank you.