We stayed here on a trip through the Gran Sasso. We found several hotels in the park, but very few with internet sites and this was the only place to answer the phone! (Southern Italy is like this - get used to it if you're coming here.)
This is your typical Italian hotel. Double bed is 2 beds pushed together and a small TV with SKY satellite advertised but not actually available. Very clean bathroom with new fixtures, although the shower head holder was broken which made for a tough shower. No view. There were 2 very nice dogs that seemed residents.
We paid 60 euro for the night with breakfast (coffee and croissants). Dinner in the restaurant was 26 euro for a huge meal for two.
If you're in the area, stay here. Note though that this place is at the base of the Gran Sasso and you need to travel about an hour to get into the park.