Where to start... Ramona, Dan (and Spice) are great hosts. To be honest - after staying with them for 5 weeks - great friends as well.
The house is a beauty. I fell in love with the big window in the living room and the small cute cactuses scattered around the premises. The house is clean and neat. In if you by any chance bump into the cleaning lady, don't forget to thank her. She is lovely, kind and does a great job (say her I said 'hi').
The neighborhood is not the greatest, but safe. Shops, the supermarket, post offices and a few good restaurants (Ramona knows which), etc are all in walking distance. So is the metro station (15-minute walk). You can take the Victoria line and will be in 10 minutes at King Cross St. Pancras (yes, my dear Potterheads, that is the one with platform 9 3/4).
Just trust me, you should go. For the house, for London. Ramona is great to talk to, Dan is a superb cook, and I know your dog is the best dog ever, but Spice should be a close second.