A period piece is how I would describe this series.
An interesting storyline with romance in focuse, and with lifelike events. A different kind from all those pummeling match like shows you can see nowadays. It has a nice touch of humour too.
The drwaing is quite fair, considering it's a show from the 90's.
As for the historical accuracy... Well, if you want to learn, your best bet is NOT watching a cartoon. ^^
What also is to note, that this series was definitely not meant for guys. However, a teenage girl may find herself watching and rechecking on her studies.