We were with a group of 13 and rented apartment B and C. Both apartments are big and have 2 bathrooms each. We had more than enough space and spent a lot of time at the terrace of apartment C which was big enough for all of us to sit. Massimo is a great host and if you need something you get a quick reply. The apartments where very clean and the location in Trastevere is great. Nice restaurants are around the corner and shops are nearby. I would really recommend these apartments.