Helena was very helpful, both during in-person conversations and through the resource booklet she has compiled. The place was very clean and comfortable. I felt immediately at home. It's in a section of the city but away from the intense bustle, so it was nice to come back there every day. The subway is a five-minute walk away. Portobello Road, only slightly farther away, offers restaurants and a grocery store with prepared food.
There's a heavy security gate that has to be locked and unlocked, but we got used to this.
I can't emphasize enough how clean the place was and how comfortable I felt staying there.