I have walked to the Four Points, but it’s close to Terminal 3, not T1. So regardless of which property you choose, you’ll have to take the train to T3. It is a 5 min walk to the Four Pts from T3 (if you exit the terminal at the far end) and it’s a nice hotel for a limited service brand. You are taking a chance on weather though in March. (But they have a shuttle from T1 and T3 which can be your back up if weather is bad.)