Mei's place is perfect for a girl of medium height to stay. Her place is more like a newly refurnished hotel, clean and quiet. You have the privacy as a solo traveler. The location is 4 stops to Central Station, close to everything (sightseeing, shopping etc.). So considering all above, having no window should not be a problem for a short stay.
Most importantly, Mei is very friendly and ready to help. You can find the place easily by following her descriptions, and she responds quickly when you have any questions.