Wonderful little apartment with A great kitchen! Alessandro left us a bottle of wine and a beer in fridge, as well as many snacks for us to munch on. The size was perfect for my husband and I and our one large luggage plus a carry on. Although there is no air conditioning - the weather in the beginning of September was mid 50s at night so we never missed it. The bathroom is separate (right next door) but we never ran into anyone else using it when needed. They were also kept very clean and you wouldn't be able to tell if there was someone before you. There was a hair dryer in our room but it didn't blow hot air. I would just make sure it works when you get there.
As for location, it was within walking distance to lots of restaurants and bars. 20 minutes from Buckingham palace and 10 from the Victoria Tube station.