The United Airlines Boeing 757-300 carries 234 passengers across United First + Economy Plus + Economy. Power and Wi-Fi are available on this aircraft. Every seat is rated below, so you can see which have the legroom, the window alignment and the quiet — and which sit next to a galley or lavatory.
The seats rated best on this map are 3A, 3F, 4A, 4F, 5F, 8F. Another 40 seats are rated best or good. Look for exit rows 20, 21 and 64 extra-legroom seats for the most room.
Seats rated avoid on this map are 5A, 6A, 6B, 17A, 17F, 18A. Another 19 seats are rated avoid. These are usually the back rows near the galley and lavatories, or middle seats with no window or aisle.