A little background about us. We are a family of 5, with 3 younger kids (ages 7, 5 & 1). This is our 6th cruise on Celebrity and 3rd time on the Summit. Last time on the Summit or a cruise for that matter was 2 years ago, so before it got "solsticized". In fact 2 years ago our nickname for the ship was the "Slummit". Although after this cruise, that name has been retired!
There was definitely not an air conditioning problem on the cruise as other posters indicated early in the Bermuda season. In fact, our stateroom and most public areas were too cold.
ROOM - I will start with the room review. All 5 of us stayed in a RS. We previously have stayed in a RS, so I will be able to compare. Room was renovated, new furniture, carpeting, etc. Flat Screen TV's. We thought it was very nice. Bathroom was not renovated and like other posters have mentioned, could use some attention. There was nothing bad about it, but it was worn. It is 12 years old. Couple items that they took out of the room during the renovation and did not replace: DVD players & computer. I'm not complaining and didn't matter to us, but it does show you Celebrity did cut corners even in the RS. We did have new loungers with cushions on the veranda. Other than that, the cabinets, closet were all original and in fine working order. Our handle to the balcony fell off, we told the Butler and it was promptly fixed. The mattress seemed on the newer end..i slept fine, my wife did not. We had a rollaway bed + the pullout couch. And we brought a Pack N Play for the baby. All in all, the room was definitely a nice upgrade to our previous experiences on M class ships. Our Stateroom attendant Maxine always had a smile on her face and kept our room very clean!