We were a group of 11 and our overall experience was good given that we all got to spend maximum time together. The house sleeps plenty…depending on the body sizes. Same is true for the baths. Although all baths do have a shower, they can be very small for someone tall. I am 6” and had difficulty manoeuvring in it.
The house is old so go with that expectation.
Hosts were very responsive and tried to accommodate requests as soon as they could.