Summer '07 wasn't as hot as forecast, but the A/C was great on the few hot nights, cooling the bedroom enough in the evening so we could get to sleep at a reasonable time. A "Which" Best Buy, it's supposed to be quiet, but we found it quite noisy - so it got switched off when we went to bed. Installing the unit was a bit awkward, as the outlet hose is short, so I got some flexible ducting to extend it. The unit has a fairly small footprint, even more so when you detach the outlet hose to store it.
the timer function is excellent advantage