@MrsPellegrinoPetrichor thank you!! I think you are right, they just blame whoever is safest to blame! They had to get a special cleaner in, who was equally shocked and very lovely, but hence the 3 hour wait. The room hadn't been cleaned ever, its in a new building only a year old so the previous tenant had moved in, lived in it without cleaning (by the amount of hair in the fridge I'd say it was an hirsute young man), walked away without cleaning and that was that.
Anyway, once cleaned it was very nice but its in the town centre and we live in a fairly rural area so DD has been upset by noise already - god knows what the weekend will bring 