We stayed at Julie's for a month and we liked it. The flat is small but it has all the necessary amenities. Julie's a great and caring host - whenever we needed something, she responded super quickly and helped us out. The area is very laid back and there's a lovely park/cemetery right next door, as well as the picturesque Frogner Park no more than 10 minutes away by foot.
One thing to note as mentioned in the other reviews - the sounds of other residents can be heard to some extent, so if you're very sensitive to sounds, maybe consider staying elsewhere. Other than that, it's a strong recommend!