Can't say enough about my experience with Trish's flat during Wimbledon this year.
I had everything I needed, and having a fully-equipped kitchen - with a washer/dryer no less - was a luxury. It's the perfect place for someone travelling alone, particularly for work. A home away from home that beats a hotel on every possible level.
A short walk to the tube so you can get anywhere in a flash, with late-opening Sainsbury's down the street for those last-minute provisions.
There wasn't a single thing I might have needed that wasn't provided in this immaculate, from a welcome package of provisions in the fridge, to good Internet, to a super-comfortable bed with fluffy pillows. Lots of hot water and GREAT water pressure, as well :-)
Kim and Trish are fantastic hosts, helpful and interested. For folks travelling alone, it's good to know that someone is there to make sure you're safe.