Natalia is lovely, super communicative and helpful.
Flat is relatively small, good for solo traveler or couple. It is well equipped. Location is good for tourist as there are a lot of attractions in the walking distance. It is on the main road, so it can get a bit noisy, but nothing too extreme, and you have double glazing windows (quite rare in old London buildings) which helps. The building itself is typical old, block of flat.