the place is slightly smaller than the photos shown but is still a nice cosy place suitable for family. it has a good equipped kitchen, although some of the pans were old and rusted that we couldn't use. the flat is warm and the rooms are comfortable. in the time that was coldest in London, we were warm.
it's in a nice location , 5 min walk to Whitechapel. with the new tube Elizabeth line, it connects to almost everywhere and it's very convenient, there are also many shops that sells cheap groceries!
only downside I would say is the flight of stairs. not suitable for those with heavy luggage. and the key sensor to get in to the apartment is not very sensitive, it took time sometimes to get it detected.
overall a pleasant experience with city relay. they are always responsive !