We had a small Sunday brunch wedding at Archeo, and wouldn't hesitate to recommend it to anyone else planning a similar event. There are cheaper venues around, but we didn't regret the extra money. The space is beautiful, the staff are really great at what they do, and the food was fantastic.
The planning process wasn't perfect - we had to request some things more than once - but on the day the staff on site were just incredibly competent and accommodating. We didn't have a wedding planner or really anyone else who could deal with the venue, and I was a bit worried that we would spend all morning making sure everything was going smoothly, but instead they really looked after us, even bringing out the food early when we got a bit ahead of schedule, making sure I got a cup of coffee, etc. I wish all customer service was this top notch.