After a staying a week the conclusion is clear: really nice host, nice place en nice environment!!
Some additional TLC for the place would even lift this to a full 5 star experience.
One point of awareness: this place has old window/glazing, which means all street noise comes in. Since this is a very quiet street this is no big issue, except for the waste bins in front of the appartment are emptied dayly at the strangest hours.