We had great experience staying in Ghyslaine's place.
Apartment is very spacious, bright, cosy, tastefully, comfortably and qualitatively equipped. There is more than enough house appliences and equipment in apartment. Great terrace with romantic view of green Berlin with trains passing by make apartment exceptional. Children room is full of toys which gave much joy for our ones. Apartment has inside yard with children playing equipment. It has two bedrooms and bathrooms so it is perfect for staying for more people.
House is in authentic local living place in residential district of Berlin. Despite location hasn't perfect infrastructure (shopping centres, metro stations connecting with other parts of Berlin is about 15 min walking distance from house) but it is really calm and safe, has good atmosphere.
We didn't met Ghyslaine live (she was on vacation) but there was no any communications problems, she orginised everything for our visit perfectly, Ghyslaine's neighbours helped us with everything.
We highly reccomend to choose Ghyslaine's place for your stay in Berlin - it should highly contribute to your great Berlin experience as it did for us :)