The two of us rented a student apartment for over 300, right in Zone 1 of London. My boyfriend goes to UCL, and I'm at KCL. It's just a few minutes' walk to the subway station, and the commuting distance is about the same for both of us. No need to change trains, direct.
Plus, as a couple, we can live in a studio, the kind for two people, and it's even bigger than the usual studios. It includes bills, security, a gym, study room, and game room.
There are still quite a few good studio apartments available now 😭, good location, and the price is reasonable!