First, it looks like they have really nice bed and breakfasts located in Lancaster County and even a few that are really close by that include spas. You can check out the list on the padutch country website under Bed and Breakfasts. At one of the locations, they say you can "wake up to a 5-course candlelit breakfast before strolling their sculpted walkway". It is said to be ranked as one of the top ten romantic places, but I am not exactly sure who is doing the ranking.
The list on what they offer is extensive in Lancaster including quilting presentations, old school visits, artisan corners, and buggy tours. They even have a three-day adventure that you can book right online, which includes bed and breakfast as well as a predesignated list of activities. The list includes many of the local flavors of Amish traditions and crafts. Try hands-on pretzel twisting or maybe a culinary class while you are there. Although most Amish do not prefer to drink, there are some local wineries as well as some breweries close by, if you wish to give them a try.
Just for your information, the Amish culture does request no pictures taken of them as they feel it is a violation of the biblical commandment.