Middle Search Plus is a research database for middle school students. You can and should search here for some articles about your topic. Dr. Waugh has found a few to get you started. This is an article on daily life in ancient Rome, which includes general information about houses and food and drink. This is an article from Scholastic Junior titled, "If you lived in ancient Rome." Here is an article from Funk & Wagnalls New World Encyclopedia, which has a lot of information about various Roman building styles. Use the menu on the left side to search for your topic.
Scholastic Go! has articles on architecture in ancient Rome, if you scroll down, you will see "domestic architecture" which is about people's houses. Additionally, this results page about Villas, has some useful articles. After you click through to an article, notice that the right side of the plage includes a link for web sites. These are articles found by Scholastic Go, which might be useful. Definitely take a look at them, but remember that you may need to review the articles to make sure they are useful to you.