To get here from Rome Fiumicino airport, take a train to Stazione Termini, then go downstairs into the subway and take subway to "Barberini" station. Before boarding the train in the airport, make sure to validate the ticket in the yellow machine. From "Barberini" take bus 95, 63, 62 or 116 along Via Veneto. You will see Excelsior on the right hand side right after the US Embassy.
The hotel is very impressive. It just finished a complete restoration that went on for 2 years, and all the rooms are newly refurbished. The rooms are rather large with furniture looking like antique. The bathroom has 2 sinks built in black marble counter top, a full bath, shower, toilet and bidet. It is tiled with "travertine" on the floor and walls.
Unfortunately, the staff is very indifferent. Nobody seems to care much about people who are staying there. The concierge and porters are only interested in tips. The floor in the room I stayed in hasn’t been vacuumed in ages, the sinks weren’t cleaned and had water stains all over the counter top. When we asked to get extra towels, it would take a while to get them. There is no way that they will bring you an iron in your room citing something about fire safety. I was extremely angry one night when around 10 pm one of the staff knocked on the door to come in and check the bar as if there wasn’t enough time to do that in my absence.
The "La Cupola" restaurant is being renovated and is closed. And the cupola at the top of the hotel is a villa-suite and you can’t visit it.