As those on West Mall know, I live in Germany. I live in a modern 3-story home that's about 3700 square feet and has thick flooring and walls (concrete, etc.). My Wifi kinda blows, and I'm trying to improve it. Currently, I have cable internet service (usually about 120 Mb/s) and use the basic wireless router (Link) that comes from the internet company. There is only one hook-up for internet service, and it is located on the first floor in the corner of my living room. That kinda stinks, but the upside is that the first floor has a completely open floor plan. Accordingly, the signal easily covers the entire first floor with no problem. There is an open, sorta-spiral staircase that leads to an open space, four bedrooms, and a bathroom. In that open space, the ceiling vaults to the third floor where there is a loft that overlooks the second floor. On the third floor, there is also the master bedroom and bathroom. On its own, the router puts very little signal on the second floor and virtually none on the third floor. I use a Wifi repeater (Link) on the second near the stairs (since that area is open). That does improve things on the second and third floors. I can at least generally get a signal, but the speed is greatly reduced. It's still passable (though barely) on the second floor but quite weak on the third floor - tons of buffering if I'm trying to watch Netflix on the third floor. So I'm looking for suggestions to improve things on the second and third floors. Should I get a beast of a wireless router? If so, what do you suggest? Should I get a mesh system (like Google Wifi)? Any suggestions are appreciated. I have tried using a powerline system (Link), but it simply didn't do much. One limitation - I don't own this home. It's a rental, so I can't run cables or wires in the walls, etc.