Yes, when we were there in January it was available. A lot of "fun" sites including facebook were blocked because they didn't want their employees logging on.
When we had out DD in July we could use the wifi from our laptop. However, the signal was horrible and didnt stay connected for more than 10 minutes max. We were able to access facebook and other "fun" sites. Most of the time we used our phones to surf facebook and email.
Re: Wifi at Harrisburg Hospital?