I have a big 6 bedroom house. My 82 year old mother lives in the guest room at the far end (she hated the old-folks home) and I've set up a 12 foot HD projector on her wall since she can barely see and having things super-sized helps.
The problem is the room has no Ethernet outlets and when she wants to watch Netflix on her Roku, something about that room is a black hole for wifi signal. You can literally stand outside the room and have full bars, walk 2 feet inside and 1 bar if you are lucky. I've tried those gadgets that use the house wiring for signal but they are sketchy at best.
What is the best router for blowing through these wifi dead spots?