Everything was just as the ad described. The host always answered quickly and getting to the room was easy, the metro is a 2-minute walk away.
What I did not like was the check-in time, which is quite late at 4:00 p.m. and the host did not have the flexibility to let us leave our bags before this time, so it is not very comfortable to be in London all day with backpacks.
Check out also seems very early at 10 am.
The bathroom was very cold and without heating to take a shower, but passable.