Rui is a very very kind host who's communication is very good. While we stayed at his appartment, he sent us a lot of suggestions of activities we could do in Porto which we really appreciated. The pictures of the rooms are accurate and i guess you could stay with 7 people in the appartment, three double beds and a bed sofa. You could cook in the appartment, but dont forget to get your basic cooking tools like oil, salt and pepper at the grocery store because it is not available in the appartment. Also, the grocery stores near by aren't too big and dont have a lot, but i guess you could get the basics here.