Staying with Janet & Adam was very nice.
The loft is spacious and has its own lavatory. It's located between two main roads (Uxbridge Rd and Goldhawk Rd) with 5-min walks for public transportation (Bus + Tube) to all major sights.
There are shops nearby and a pub around the corner. Janet and Adam even asked me to join them on their Monday night quiz night team at the pub, which was a lot of fun!
A couple of Bus stops away there is the enormous Westfield shopping centre which offers anything you could possibly ask for, shopping and food wise (e.g. Jamie Oliver Restaurant).
I can only recommend the loft to anyone thinking of going to London!