The flat is adequate for a stay in the city. It is "tired" but has 2 bedrooms, 2 bathrooms, a small kitchen and a living room. There is no TV but this was not an issue.
When you get the key, you'll enter a stairwell to all of the flats and there is a feint unpleasant odour. The lift is an old traditional lift (small, two doors that need to be both in position before it will work); the apartment on the other hand was very clean (you could smell that disinfectant cleaner had been used). The bed linen and towels are new and fresh and the shower perfectly adequate (unless you want a lot of space - the one in the en-suite is small, the other is a shower in over a bath).
Sognando was very responsive and the service was excellent.
The major issue we found was the noise outside the apartments. The flat had secondary doudble glazing over the sash windows - however, this was not enough to keep out the noise from the two local adjacent pubs and this went on until around 2am. It really depends on your sensitivity to noise.
US visitors will need to be aware there are traditional taps (one hot, one cold - no mixer) and there is no air conditioning (it was hot when we stayed).
The location is ideal if you need to do business/ visit the City of London.