There is a lot of written stuff about it, although I had heard of it before the advent of computer and internet.
It could be true, but then again maybe not entirely, to find out more, a visit to Germany where the house he used to live in still stands as a museum/exhibiton could give some clues, and a few questions asked, may give more insight into the composer's life on a more personal level.
His father was a heavy drinker, and was a bit cruel to young Ludwig, hence, Ludwig's pesonality I have read, was a bit erratic.
Along with his hearing loss, it is written he also had tinnitus, which is something I have...and although I have learnt to live with it, but in my younger years, it was all I could hear when it was quite bed time. It's like having 2 or 3 differnt notes on organ keys compressed all the time.
Anyway, I had a chuckle reading this article, where he would be seen by visitors in his underwear or even naked on the floor with his piano with the chopped off legs. Now that part I didn't know before!
http://www.artsalive.ca/en/mus/greatcomposers/beethoven.html