This is a very atmospheric story: although not the usual haunting. It's presented as the oral history of an up-and-coming British folk band in the 60s and the story of what happened the summer their producer sent them to a decaying manor house in the middle of nowhere to rehearse and write material for their second album.
Hand paces the story well, giving us little bits of creepiness along the way, and grounding it in the mundane: they're just broke teenagers hoping this is going to be their big chance. The house is a weird one, added onto every century or so. The villagers are stand-offish. The summer is gorgeous, the songwriting is going well, and the rehearsals are great. Just little bits of wrongness here and there.
It absolutely feels like the reminiscences of aging hippies: the sex, the drugs, the ratty old clothes. The band members have different voices and personalities, and the whole thing comes across as exactly the kind of urban legend you'd hear about a band after several decades, or a Whatever Happened to special on MTV or something.
Very well done, and a clever twist on a number of tropes. I rather like the setting (in time and space) for being not at all gothic, but rather idyllic. This is the pattern of most of E. F. Benson's ghost stories and adapted well. It'd make a gorgeous film.