My holiday company has changed my accommodation. Can they do this?

This depends whether your holiday company specifically states in their booking conditions that they can make changes like this. If they don’t reserve the right to do so, then any change will be a breach of contract. If they do reserve the right to make the changes, then they must follow what their booking conditions say.

Our Code of Conduct states that booking conditions should clearly advise that if a significant alteration is made, the travel company must offer an alternative if available, or a full refund. The company should also offer compensation, unless the reason for the major change is force majeure.

Force majeure
Such circumstances including war or threat of war, riot, civil strife, industrial dispute, terrorist activity, natural or nuclear disaster, fire or adverse weather conditions.

ABTA's advice
If the change is to accommodation within the same resort and of a similar standard as the accommodation originally booked, it won’t normally be regarded as a significant alteration.