I am honestly not sure why AKL gets such a bad rap. Here is a blow by blow of your concerns...
Beds: All of the furniture at AKL is hand carved wood. This makes it a bit bulky. I have however never had a problem running into it or becoming injured by it. I slammed my knee into my bed last weekend it had nothing to do with the bed. As far as mattresses go that is really a very personal choice. Hotel mattresses in general tend to be a little on the hard size because they are more durable. If you are sleeping on a soft pillow top with 3" of additional memory foam on the top any other mattress is going to feel like a board.
Staff: In more than 100 trips to WDW I can count the number of less than great CMs on one hand. I would recommend reading the
linked article and you will see where a good chunk of those reviews coming from. There was a member of this forum whose wife went into labor at AKL. I'll see if I can find the thread and you will get a good idea of what the service level of AKL really is.
Room Size: This one is largely correct. AKL and WL have the smallest rooms of any of the deluxe Disney resorts. If someone is use to the much larger rooms of the Poly or Contemporary, then the rooms at AKL will feel smaller. That being said, I have never felt cramped in a room at AKL. As to bad rooms, I have no idea where people get this from. Occasionally a room can be marked as cleaned when it has not been (happens everywhere from Motel 6 to the Four Seasons) and if that happens Disney will fix the problem.
Cheap Spirits: I have never known a concierge lounge to have top shelf unless you are at a 5 star. Bailey's will not be hard to come by at any of the bars in all of WDW, but I do not remember seeing anything other than beer and wine available for free in the concierge lounges.