Steinway pianos are probably, overall, about as good as any made and after all are the de facto standard - certainly a clear majority of big-league classical piano concerts worldwide are given on a Steinway. They aren't everyone's taste but as with any pianos their sound and touch depend quite strongly on who last set them up (tuned, voiced, regulated). They're very toughly built and reliable - obviously not perfect but very good. Steinway does like to present itself as the inventor and one true maker of the modern high-quality piano, which is rubbish and gets up many people's noses (including mine, to the limited extent I could actually care), and people do get awful partisan for and against, but anyway, rest assured that you're the proud owner of a very fine instrument indeed. The Model A of course doesn't have the lovely rich bass, nor the sustain, of the larger instruments but it's still excellent of its type. Clearly some friend or relative values you highly to buy you a present like that!
I think I can claim to be pretty unbiased on this - I own a modern Ibach and an old Bechstein and as a jobbing freelance accompanist get to play a bit of practically everything, up to 20 or more pianos a week in all shapes and sizes.