We booked for three nights during the Primavera Sound festival. Unfortunately, there was construction/refurbishment work being carried out in the shop below the flat which was incredibly loud inside the flat. We were attending the music festival until the early hours so needed to be able to sleep in the morning, but were unable to because incredibly loud drilling and hammering started at 0830 AM. We had to leave the flat and try to get some rest in a local park, and then decided to check ourselves in to a hotel for the remainder of our stay. We told the host (which seems to be a company rather than an individual) that we had left early and why, hoping they would consider refunding us. They were aware of the works when we arrived (there was some noise as we were being shown round the flat which we commented on), and presumably for some time before, but still decided to go ahead with our stay. They declined to refund us because they say they have no control over the noise and it isn't their fault, which I guess it isn't, but I know if the roles were reversed I would've been very embarrassed about the situation and certainly refunded the guests.