I was not planning on making our differences public but since the host has chosen to do this, i will add my perspective.
The biggest and most important alerts here are non-disclosure with three items.
1. The apartment itself should not be considered "non-smoking." In reality, the apartment smells considerably of cigarette smoke. The "smoking patio" is directly associated with the bathroom and bedroom and is used often by the other renters for smoking. Even if windows are closed, you have the waft of smoke coming inside, most likely through building ventilation. If you are sensitive to smoke/stale smoke odors in a home, this is a serious consideration. There is no simple fix to this feature for non-smoking guests.
2. The extremely strong smells of waste at the building entrance are not mentioned. Possibly i stayed at an unusual time with this issue, but there were others racing through the lobby to avoid the smell. I have stayed in other buildings with the garbage/recycling at the front lobby but the waste is removed frequently and this is not so prevalent or noticed at all. This is a system that can be fixed but the owners do not seem to care.
3. The front door key system is completely under-disclosed and in adequate. While the host does mention it with bold letters, what is entirely missing is the extreme complication and COST of the solution. The host is very aware of the extensive cost but there is no mention of this in the description or at check in. It is a system that invites simple error (especially for Americans not accustom to it) yet there are no simple notes on the door to remind guests, and there is certainly never mention of the cost until it happens to you. The MINIMUM cost here is 100 euro (plus HOURS of being locked out) and the maximum is open ended depending on the time it takes a locksmith. I was told the visit had a flat fee for travel of 40 euro and then was charged based on amount of service. The technician worked for 10 minutes, at most!, and wanted a total of 150 euro. If i had been alerted to this very costly accident, i would have decided myself that i would use only one set of keys so that it could never be left in the inside door when going out, and i could have used the lockbox that is outside. Very simple to avoid this total bummer for a simple mistake. Since the owner isn't affected by the cost, she doesn't put the truthful emphasis on it. I felt scammed by the price and what is probably quite the business involving American tourists. I am a superhost as well and would never set my guests up for potential surprises and mistakes like these.
On the bright side, the apartment is located in an excellent part of Rome with shops and restaurants outside the door. Walkable to most everything. The kitchen is large and fully equipped, and the shower is also a plus being roomy with great water pressure. The host's son is a lovely person.