I have a small (3lb) Chorkie (Yorkshire Terrier with Chihuahua mix) called Charlie, he's very cheeky and fun. I would only consider yorkshire terrier sized dogs and no bigger as long as they got on with Charlie. Charlie doesn't get on with bigger dogs, he's a boy so he likes females.
I live in a built up area, but not too far from Kensington Gardens which is where I take Charlie (weather permitting), who loves it there. I have a small garden area, which is enough for the sized dog I have and would be suitable for the purpose of dog sitting another small dog.
I can provide overnight stay ONLY WEEKENDS (Fri-evening after 6pm-Sun) and would need notice on this. I walk, feed your dog (food needs to be provided and any treats your dog likes).
If you live locally to me, I could pick up and return your dog for a fee.