I live in a house with a fenced in yard and my own three giant breed dogs as playmates. I also enjoy running and will be willing to run with your dog. I have experience with giant breeds and know how to handle them. If they are staying a day over the weekend I can take them hiking somewhere, as long as the weather is nice. I can also take your dog to the dog park if you wanted. Because of my work schedule I will be able to stay home with the dogs most of the day, only leaving for work in the evenings, and my roommate lets my dogs out before bed so they won't be stuck inside for a long period of time.