I stayed at Emma's place for a month, in Jan. It's got all you need for a comfortable longer stay, with all amenities and good range of kitchen utensils/appliances. Emma is very kind and responsive, and check-in is straightforward. The location is great: close to the Fremont Troll, ~7min away from restaurants/shops in Fremont -- you can even see Mt Rainier from the apt on clear days.
The house is on an express road and there's constant background noise with cars whizzing by, but should only bother very light sleepers: I did not have a single bad night of sleep there.
Couple notes for folks w/mobility concerns: a) the unit is only accessible by stairs; b) the area is pretty walkable and well connected to multiple bus lines and walking routes, but a lot of it will requires going up/down stairs and steep hills and/or crossing highway-merging roads. Reasonably fit individuals should have nothing to worry about though.
Overall, I highly recommend Emma's place for a Fremont stay!