We (one adult two children) spent four nights in Eudardo's place in Shadwell and used it as a base for exploring London. In this sense the flat was ideal. The location is perfect. You are immediately on the DLR for east/west connections (1 stop to Bank) and there is the Shadwell overground station for north/south connections. Shadwell its self has a great community feeling, and there are numerous small shops and takeaways around the corner. If you feel like talking a walk, it's a pleasant stroll through the former docklands and/or along the Thames, to Tower Bridge.
The flat is on the 3rd floor of the building, and one has the impression it is largely occupied by young families. As such, despite the central location, it is quiet at night. The flat is generously proportioned, in particular the three main rooms. The heating worked very well, and it was sufficient to heat briefly to get a cosy room. The beds were very comfortable and both the bedding and towels were clean and freshly laundered. Only the kitchen could have used a little work, but this was rather the fault of previous occupants not reporting breakages to Eduardo.
Communication with Eduardo was fantastic, he provided us with very clear instructions for check in, and check out. He also answered all my enquires essentially immediately, and remained friendly and helpful throughout. Importantly, the flat is indeed exactly as described, and represents superb value for money for central London.