Hi Opal,
Congratulations!
One word of caution: It may be difficult to tell on your first week or even month on a job whether or not they really like you. I know from experience that some places wait a few weeks or months and then lower the boom on you, especially for personal behavior which (1) they're uncomfortable talking with you about and (2) they figure - rightly or wrongly - you should already know not to do.
On the other hand, if they really do like you there, that's great! I completely agree that fitting in well and being happy with the people there - and vice versa - are more than worth a small increment in salary. (To some people they're more than worth any amount of money, and I can understand that.)
Cheers!