VQOTW: 28 DAY RULE

My client runs a small bed and breakfast and a furnished apartment which to date has been let on an Airbnb basis with a daily linen change and cleaning service. Normally she would account for VAT on all of these stays. Now she has received an enquiry from a construction company about exclusive use of both for a period of 12 months to house some of its employees working away from home. Should she still charge VAT?