Stayed here two nights for work, 5 minutes walk from International Arrivals at T5. T5 itself is a good 25 minutes walk from the other terminals.
The place is brand new and it shows. Both good and bad.
High tech rooms with good connections for AV equipment. Nice furnishings and lighting.
Most of the staff really did not know what to do. Examples include not knowing how to react when a customer asks for something like a power outlet adapter. Waiters in restaurants kept forgetting what we ordered. Restaurants were out of all kinds of food. Even asking for a wakeup call seemed to cause confusion.