The flights we were on meant that you could have breakfast at Gatwick, but that the next meal would be in the evening at the hotel, some 12 hours later. So buy a sandwich or something to keep you going. The big downside is that you fly with ThompsonFly - who use the minimum UK seat pitch of 28 inches in order to cram in more passengers, leaving less than 9 inches between the front of your seat squab and the back of the seat in front: you really are treated as Self Loading Freight.
Be prepared too for huge queues on the return at Salzburg Airport - the airport can not be bothered to employ enough security staff. When we returned the queue for security stretched right around the hall and through most of the check in lines - chaos, and over an hour and a half standing in various queues.
The hotel is good: clean, modern and comfortable rooms; pleasant staff, reasonable food, free wifi. BUT...the trip notes says it takes credit cards for your bar bill, whereas it doesn't except under exceptional circumstances. They really don't like cards: they even offered to drive us to a cash machine as we didn't have enough spare cash to pay with! In the end we settled the problem by using a debit card.