As a daycare person, if you can take her beforehand and just walk around if you can so she has seen it before.
She is obviously very easy going and able to adjust, she is used to being in daycare so it probably won't be a biggie.
DO NOT linger just give her a hug and a kiss and walk out. She is young and even if she cries she has no long lasting memory right now. Most kids calm down 5 minutes after their parents leave, but if she feels you being anxious that will just make it worse.
I would if you want and she handles you leaving in the morning you to check on her, if she doesn't do well, then don't. I would personally wait a few days until she gets the routine down before dropping in. It could upset her all over again.
For the sake of the daycare , find out what their schedules are, naptimes, snack times and so on so you don't come in an disrupt the flow of things with a visit.
As long as you are comfortable with who is watching for her and caring for her, then she will feel you being relaxed about it.
Change is hard for little ones, but at her age they bounce back so fast. She will soon learn faces and voices of those watching her and enjoy it big time.