Kristina's place is as described - clean, bright and large room with plenty of space for storage. It's a private room inside Kristina's two-bed apartment. The apartment is not too big - typical London standard, but you will find it cozy and comfortable. You need to share bathroom and toilet with Kristina and her boyfriend but this is not an issue at all during my stay. The apartment is on 1/F of a building. There might be noise in the morning when kids in the neighbourhood go to school, etc, but considering the central location of the house in Central London, this minor issue should be bearable. In fact, the building is located in a very silent residential area.
The apartment is very closed to Victoria Coach Station (10 min walk). In fact, you can walk to anywhere in St James and Westminster area within 15-30 minutes. For example, 20-30 min on foot to Buckingham Palace.
Kristina is a super nice host and is very easy going.