Agreed. But it would also mean I would have to put a router in one of the bedrooms. I'm not particularly fond of that idea, for a number of reasons, some health related (this may be paranoid, I know), others because I'd hate the flickering of the leds in the room at night. I like to put these things where they belong: out of sight. This means the technical room downstairs and the attic.

Btw, I've found a good alternative: this TP-link router, configured as an access point. Wireless N 300 mbps speeds and 4 gigabit LAN ports! If you don't like the stock firmware (even though it's not bad at all), it can also be flashed with the DD-WRT firmware, which gives a lot more features (VLAN, VPN,...). Best of all: it costs about 45 euro! I can't think of another option which gives more bang for the buck! About the only thing it doesn't have a a 5 Ghz radio, but I don't really care about that anyway.