The flat is clean. The location is fantastic if you want to be in the center of action of Covent Garden (shops, markets, restaurants, piazza). It is located in a pedestrian shopping area and above shops, which means easy access and lovely strolls for you, but also noise during the afternoon and evenings for the person sleeping in the living room. Closing the windows does mute the noise a bit. For the people sleeping the bedroom, you can hear the street entertainers and audience from the piazza behind the flat. The noise may or may not be a problem for you, depending on your needs. Again, closing the windows does help.
The living room/kitchen has a door, which was great for the third adult in our group who was sleeping on the sofa bed and wanted privacy. The washing machine has a dryer and there is a drying rack, which I appreciated. Tesco is just steps away if you need anything. The bedroom is spacious and has a door.
The main challenges would be carrying lugguage up the staircases to get to the flat, the bathroom and shower being very small without counter space, and no housekeeping unless staying for 7+ nights (we stayed for 5).
The communication was fanatastic; they responded quickly to my emails. I requested 2 fans before my arrival because we were arriving during a heat wave. They responded quickly that they would ask housekeeping to put them in the flat before arrival. There was one fan when we arrived, which was great for those in the bedroom but not for the person in the living room. Regardless, we appreciate the quick response and the one fan. I also requested toilet paper and housekeeping, but was told that it was for 7+ nights only and we were staying 5. I asked for at least more toilet paper and was told that we would receive some, but we never did.
Checking in was super easy. I would consider staying here again if I wanted to stay in Covent Garden while visiting London.