I came here with some girlfriends as part of a bachelorette weekend. The spa manager was great about answering questions and it was super easy to schedule. At the last minute, some of the party wanted to change the services requested and they were very accommodating. Since I was roaming, I had turned off my cell phone, so I didn't realize that they had called and left a message to see if we could show up a little earlier. We showed up during our originally scheduled time and there was no mention of us showing up "later." Despite starting later than they had wanted, they didn't rush the process and took their time with the experience.
Summerhill offers some great packages at a discount from the a la carte prices. I thought the prices were very affordable compared to some of the other options that I looked at. Not everyone has to get the same package. There were four of us in the group and we were in two separate rooms. We were split up based on the packages we had selected. The manager mentioned during the reservation process that they have a room that can fit 3 guests comfortably, but it would be tight for 4, which is why I think they split us up.
Definitely a great place to go and get some pampering with your girlfriends!