Jason's place is great for a short stay. WE stayed for a month and it was ok but it was a bit difficult to cook on more than 1 hob at a time, it is a comfy but old flat, which is ok. The area is well located, a 5 mins walk to nearest train, but the area was not very clean (which of course is out of your control) but it's something to bear in mind.
We would recommend it for short stays, there is more than enough room for two people to stay comfortably and Jason was already very communicative with us.