We has 13 adults in out group and there was plenty of room for everyone. The location was great with public transportation close by, a shopping center with restaurants and a grocery store, a laundry mat and various other shops. It was not in the middle of the main "tourist" areas, but was close enough you could walk in 30 minute or take public transportation.
The house was clean and there was plenty of space. He arranged for transportation from the airport for us arriving in three separate groups and arranged for transport to the train station for the next part of the trip.
Overall a great host and great location.