RB951-2n - Wireless range ?

I want to install an AP in a large room, about 5mx8m, just to be mounted to one wall, to cover only this room. Is the RB951-2n good enough, regarding its relatively low TX/RX-power ?
(Looking at the low-power RB951-2n, because not to interfere with my neighbours)

It will cover a much larger area, maybe 10x the size.
If you want, you can reduce the power, because you only need this one room.