I second EYF (went in 1999). I thought it was great. I also had a similar programme at BU that was 2 months before Orientation, to decide at the last minute if it was what I wanted. EYF was better though due to the fact that they held it before I sent the app forms in.
I think the Boston area is good for deaf people as well. BU has a top notch Disability Service Provider (they were rated the best University for the disabled). I often got the services I wanted for each class (CART was always available, CSTs were harder to get). BU is expensive but their DSP department is worth it!
Based on my friends' experiences, the following universities are so-so for disability services:
1) Brown University: Even though it's a really REALLY good university, the availability of certain services was inadequate. My sister was the only CST in the area (two students really wanted her to do their classes, one at Brown, one at Roger Williams). There were plenty of CSTs in Boston but were not willing to take the hour long commute. My friend at Brown could not get CART.
2) University of Wisconsin- Stout (Menomonie, WI). This is one of the reasons why I recommend going to a university in a big city. Menomonie is a very small city. My friend who went there begged people in my hometown to come up and CST (including my mum, who emphatically said, "No." because of the fact that it's a LONG commute). She didn't recieve CART. I think she might have depended on notetaking and using lipreading.
So I recommend going to an University in a big city due to the fact that you're more likely to get services because they have those services within reach (CART, CST/ASL). It may seem frightening but it's worth it. I would recommend looking into the DS departments (go to the Unis you are interested in and ask them about their services, how often are they available, etc).