Julie was very helpful and always replied quickly. Her place was spacious and well furnished. The kitchen is super equipped. Really. If you like cooking you'll find all the appliances and tools you might need :D
Wi-fi wasn't the fastest, so if you need to work while traveling you'll need to be patient.
The location was central and provided easy access to the train station and several public transportation options.
The bed wasn't the biggest we ever saw, but it definitely fits a couple comfortably - and she was kind enough to offer an extra air mattress as well.
Overall we had a very pleasant stay and would recommend for couples visiting Oslo for tourism.