We first stayed at the Bar Harbor Inn in May 2013, and decided to come back to stay in July 2014. (We live in Washington State, but have family we visit in Maine.) We had the the same type of room (the two story "loft" suite) in the Main Hotel portion. We were pleasantly surprised that the entire unit was freshly painted and all the decor cleaned or upgraded (I'm suspecting that the hotel, in general, was painted, re-decorated, etc.). It was great a year ago, but it was really nice to stay in a "nearly new" very old room!!
View from the upper floor deck facing the harbor/ocean was fantastic. Spent many hours just enjoying the view, people watching and seeing all the boats coming & going. (Were also blessed with fantastic weather, so that helped... :-) ).
HINT: While it was fun "rubbing elbows with the rich & famous", summer is the peak $$$$ season, and they don't have specials/discounts during this time (don't have to, the hotel and town are PACKED). For a more frugal stay (but still a tad pricey), take a chance on the weather and go mid/late-Spring, or early Fall. (They close down during the Winter.)