I saw that advert too, bless them, doesn't look like they got many replies!
Funny, quite a few years ago I advertised for a summer loan and got one. Ended up with a lovely teenage ex-point to pointer who was great fun, if not a bit quirky. His owner didn't have time to do much with him, plus she kept him at home, so it suited her fine to take him back again after. So it can work