Martha's place was very comfortable and gave us a good amount of separation that make it feel less like a private room, but more a place to ourselves. Parking was easy and convenient. Guess access is through the back door and right into the room, so no issue to disturb Martha and her family when coming and going.
My group was me and two other girlfriends (3 total) and it was a little tight, but we didn't mind. I wouldn't recommend trying to fit 4 people even though she allows up to 4. Just a something to note if you are thinking of fitting more people in!