Chieko's place is quite spacious (for Tokyo), clean and tidy, is very conveniently located close to a metro station, and Ota-Ku is actually a very nice and quiet suburb of Tokyo, but with full access to Tokyo's superb railway system.
Chieko helped me with a big typhoon approaching by early check-in, and great hospitality. And she met me at the metro station and guided me to the house, and then explained everything to me personally. Also I can attest that this house is typhoon-proof. If you ever need that. :-)