Rampa literally means "ramp". While it might seem like an ordinary word, its use in this song is quite unique and metaphorical.
Ultimo sings, "Mi porti in una rampa che da solo non farei" (You take me on a ramp that I wouldn't go on alone). Here, "rampa" isn't a physical structure but symbolizes a challenging or adventurous path in life that the singer is willing to take only because his loved one is with him. It's an interesting way to express trust and shared journey.
Ultimo spends this whole song asking questions he already knows the answer to. "Ridi ancora per non piangere?" (Do you still laugh so you don't cry?) comes back three times, and each time it sits next to something small and specific: a first coffee, a phone number ending in 23, a car with the two of them in it. The chorus asks for a very particular kind of love, the after-hours kind. "Vivimi di notte / Quando dorme la città" (Live me at night, when the city sleeps) is the request, and "Fermiamolo 'sto tempo / Prima che il tempo complica / Ogni inizio con l'età" (Let's stop this time, before time complicates every beginning with age) is the reason he gives for it.
What keeps it from going soft is how plainly he admits his own habits. "Ho ancora quel vecchio difetto di perdermi / Ma volevo parlare di te" (I still have that old flaw of losing myself, but I wanted to talk about you) is him catching himself mid-thought and dragging the song back to her. He says he goes to the piano when he misses her, and "E per magia non sei distante" (And by magic you're not far away), which is a songwriter telling you outright what the song is for. Then the last line answers everything he asked: "Io sì" (I do).