Yes this team is still working at Stansted on contract. When you work at the airport you realise what a massive boost this team gives to the operation.
Furthermore they only wake passengers up that are lying down over seats or floor space and blocking emergency exits and equipment.
The last I heard was they would be staying at Stansted until at least the end of summer 2019.
Hotel rooms are available and booking in advance will get you a good deal. Also a new ‘Premier Inn’ is being built in nearby Bishops Stortford. This will have around 100 rooms and is right next the train and bus station, for easy connections to Stansted and London.