I just moved to Japan for work and my original plan was to stay at Yuka's place for 3 weeks while I searched for an apartment around Tokyo. This actually ended up turning into 5 weeks due to dealing with various hurdles of getting set up in Japan as a foreigner.
During those 5 weeks, I didn't have the typical experience of someone just staying in a place for holiday travel purposes. Yuka was more than accommodating and willing to help me if I needed some special assistance. Anytime I had a question, responses were quick and easy to understand.
The apartment itself is in a convenient location just a couple of minutes walking from Zoshigaya station for the Fukutoshin line and about a 10-15 minute walk to the Mejiro station for access to the JR Yamanote line. Convenience stores and restaurants are all close by and Ikebukuro is only a few minutes away by foot. The only unfortunate thing is during my stay there was significant construction going on outside as there is some kind of road and/or train track modernization going on.
The apartment has everything you need for light cooking and laundry. The pictures of the place do not lie, but be warned the place is a little on the small/cozy side.
All-in-all I was satisfied with my stay and Yuka was easy to deal with.