When you're tired of central Rome, it's easy to get out into the Roman countryside and take in historic sites like the Appian way. It makes for a great walk. From Trastevere, just walk past the Circus Maximus and the Caracalla Baths and soon you're on the Via Appia. When Rome's temperature soars, you can always drop in to one of the three cool Catacomb complexes found along the Appian Way and marked on the Map below. Click or tap the markers to see what they contain.
The Parco Regionale Appia Antica has lots of information on how to get there and what to do. It's marked on the map, so go there as soon as you get to the Via Appia (a good place to start on your walk is the Baths of Caracalla, the northernmost marker on the map).
There is a gap in the markers between Copo di Bove and the Villa dei Quintili, which can be covered by bus if you don't wish to walk. Instructions are given in the linked article.
You could spend several days on the Via Appia, checking out the sites nearby.
There are several restaurants on the Appian way--our current favorite eatery is the one shown in the picture, Trattoria Qui Nun Se More Mai on Via Appia Antica 198. It offers a simple Roman cuisine based upon fresh vegetables offered as a antipasti, 12 euro for a table full of plates, and grilled meats. You can reserve and get user ratings via the information on the Trattoria's Facebook page.
Although pricy and a bit "touristy", is Ristorante Cecilia Matella at via Appia Antica 125-129, a short ways away from the Tomb of Cecilia Metella.
Folks also like the food at Trattoria di Priscilla on via Appia Antica 68. Closed Sundays.
Yes, most folks come for the bone collections in the Catacombs. You can visit three of the top coatacombs along the Appian Way, they are marked on the map above.
For those who want a planned experience with transportation, you may wish to look into the following tours available through Viator.
Appia Park Apartment gets some rave reviews. It's 800 meters from the Appian way. Less expensive is the Hotel Kolping Casa Domitilla, a mere 200 meters from the Catacombs of Domitilla. Both of these are in areas much quieter than central Rome.
Rome Vacation Rentals - Here you'll find over 1600 rentals in the Rome area, from palaces to one bedroom apartments.
One of the many attractions along the Appian way is the first century Tomb of Caecilia Metella (the round tower) and the 12th century Castrum alongside.