This was our first time in Rome, our experience was a bit mixed.
Pros: very central location, great for exploring if you love to walk; photogenic sights within short walking distances; close to supermarket, shops, restaurants, cafes & bars; easy access to sightseeing spots; spacious apartment; very good sound proofing windows (can be noisy downstairs); Guido is helpful with transport and has great communication.
Cons: about 1.3km from metro station; apartment smells of bathroom plumbing; kitchen cleanliness not great (mouldy sponge, kettle filled with white substance that dissolved into the water we drank - which Guido promptly replaced); apartment is upstairs from restaurant with frequent food & cigarette smells.