As the saying goes: when in Rome, do as the Romans do, and according to local tour guide Alessandra from Art and Food in Rome, that means a simple but classic breakfast.
"An Italian breakfast is cheap because it's composed of a cappuccino and a croissant," Alessandra said. "On average that should cost about two to three euros (NZ$3.40 - 5 NZD)."
And here's a thrifty tip: you should definitely consume your breakfast like the locals do, standing up.
"There's a big difference between standing and sitting," Alessandra said. "Some restaurants apply a surcharge for sitting (table service) which can be double or triple of the normal price, so a coffee and a croissant can easily go up to seven euros (NZ$12) if you choose to sit."
Lunch
Lunchtime means one thing: pizza.
"There's a lot of pizza-to-go places in Rome," Alessandra said. "And they charge by the weight, not by the slice.
"They can serve you three or four different types of pizza, so you can have a little bit of Margherita, maybe mushroom, they have white pizza … and they put it in a little tray for you and that will cost you maybe five euros (NZ$8.40)."
Another lunch option is a panini (sandwich) which you can have with a variety of fillings including roast pork, mozzarella, tomato and basil.
These will only set you back a few euros as well.
Afternoon snack
Summer in Rome is HOT with temperatures reaching 40 degrees.
A tasty way to cool down is by visiting one of the many gelato stores in the city.
A cone with two scoops will only set you back about 3 euros (NZ$5).
If it's a hot day though, your best bet is to get the gelato in a cup rather than a cone because it will melt in an instant and you'll not only be sticky but also pissed off that you just wasted a few bucks.
Dinner
For a dinner suggestion, I spoke to renowned Australian chef Neil Perry who is also Qantas' Creative Director of Food, Beverage and Service.
The man knows his food and has been to Rome several times over the years.
"You've got to hit up one of the many trattorias (an Italian-style eating establishment that is generally much less formal than a restaurant) and have a bowl of one of the very Roman pastas, so an Amatriciana or cacio e pepe or alla gricia," he said.
According to Alessandra from Art and Food in Rome, a good bowl of pasta will typically set you back about 20 euros (NZ$34), but you can find some cheaper deals.
"Of course it depends where you are," she said. "If you're in a very touristy area they try to overcharge you, but if you go down the side streets you can find restaurants which are a little bit more 'regular' in their price."
Activities
OK, so we've covered what foods you should have, but what should you actually get up to between meals?
Well, the best thing about Rome is that it's a sightseer's dream and because a bunch of the most famous landmarks are all within walking distance of each other, it means you can tick off a huge number of them in one day AND you'll work off all those carbs in the process.
You could start by checking out the Spanish Steps which were built in the early 1700s.
A small tip – whatever you do, don't try and sit down on one of the steps. Sitting is against the rules and there are plenty of guards around the place who will blow their whistles and angrily gesture for you to stand up if they catch you having a rest.
Next, you could visit the iconic Trevi Fountain, which is just a 10-minute walk away.
Make sure you bring a coin with you to throw over your left shoulder into the fountain. According to local lore, tossing a coin into the fountain means you'll return to Rome one day in the future.
A 10-minute walk from the Trevi Fountain is the stunning Pantheon, which is almost 1900 years old.
Just think about that for a second … 1900 years old. It's actually hard to fathom, isn't it?
There's often a queue to get into the Pantheon, which is one of the best preserved of all Ancient Roman buildings, but the line moves very quickly and entry is free.
A five-minute walk from the Pantheon is Piazza Navona, a spectacular open space that features several fountains including the impressive Fountain of the Four Rivers.
The piazza is built on top of the ruins of a sports stadium which was built way back in 86AD.
A 25-minute walk from Piazza Navona is the iconic Colosseum.
Entry to the amphitheatre, which dates back to 80AD, requires a ticket (starting from 18 euros / NZ$30) and the queues are long.
Obviously buying a ticket would blow your budget right out the window if you're trying to stick to NZ$55 for the day, so for the purpose of this article, I'm going to recommend just walking around the Colosseum and taking in its beauty from the outside.
There's one other major tourist attraction that I haven't mentioned yet, and that's because Alessandra from Art and Food in Rome made it clear it wasn't exactly tourist friendly.
"Do not go to the Vatican!" she laughed. "Of course, people have to go but it's super busy, so hot, so crowded.
"Come in the winter when it's summer for you and you can go to the Vatican, but for now avoid it."
Extra tips
Water: Given you'll be doing a lot of walking, you'll want to have plenty of water throughout the day. A little tip is to fill up your water bottle at the Fontana della Barcaccia, which is the boat-shaped fountain at the bottom of the Spanish Steps (don't worry, the water is safe to drink).
There are also many free fountains throughout the city which are known as 'nasoni' fountains, 'nasoni' meaning 'big nose'.
Booze:
If you want to have a drink or two in Rome, it's a good idea to take advantage of the 'Happy Hour' deals that most places offer between 6-8pm.
You can get an Aperol Spritz for less than 7 euros (NZ$11.80), which I certainly did on many occasions (a local barman told me: "Aperol is for women, Campari is for men" … I tried a Campari spritz but it wasn't for me, so I guess that makes me a woman!)
This writer was a guest on Qantas' inaugural direct flight from Australia to Rome