The apartment is in an unbeatable location. You are minutes away from major sightseeing spots like Trafalger square, national gallery, big Ben, London eye and many more. We didn't even need an oyster card, since everything was walking distance (no more than 30 min to almost all attractions). Soho is a great neighborhood- lots of restaurants and pubs to visit.
If you are a light sleeper, I'd recommend bringing ear plugs - the host provided them as well. It can be noisy well into 3am. The staircase is steep and narrow, due to it being an older building. If you travel with heavy luggage - 4 floors can be a challenge. The heating and water pressure is a bit tricky. The host provided 2 heater units which will make the place toasty, but if you don't want to be cold in the bathroom you gotta roll them around a bit. The pressure for the water is very low and it will take a bit extra time to get done. Overall amazing location and if it's just for sleeping - why not :))