Marthe is very nice and her place is really clean. The flat is in good location, close to public transportation, restaurants etc.
Though, I feel I have to point out a few things. The sleeping space is really small and there is no door to it. The bathroom is shared but it really is in a private bedroom. Not that there was any breaches of privacy or anything like that but if you care for that kind of thing, just saying... It is a small, top floor flat; the stairs up to the flat and inside are quite narrow, if you have big/heavy luggage, it might be a hassle to take it upstairs.
All the same, it was a nice stay for me as I had other places to be most of the time.