Nine neighbors in a hotel

Question

Alessandra, Marta, Cristiane, Camila, Eduardo, Janice, Giulia, Mateus and Lucas are neighbors who live in a hotel.

On each floor there are three bedrooms: one on the left, one in the center and one on the right.
Mateus does not live on the lower floor.
Janice lives directly above Lucas and directly beside Marta, who lives on the left.
Eduardo lives on the right and one floor higher than Janice.
Camila lives directly above Janice.
Giulia lives directly above Cristiane.
On no floor only girls live.

Knowing that everyone lives in a room, who lives on the second floor?
a. Alessandra, Lucas and Cristiane.
b. Janice, Giulia and Lucas.
c. Marta, Eduardo and Giulia.
d. Alessandra, Marta and Mateus.
e. Eduardo, Lucas and Marta.
No alternative seems to produce a result consistent with the statement. Since, for example, Janice and Marta live on the same floor.
Girls: Alessandra, Marta, Cristiane, Camila, Janice and Giulia.
Boys: Eduardo, Mateus and Lucas.
Source

Helen · Accepted Answer

Despite Rand al'Thor already having posted a very nice answer, I thought I might provide some super high quality MSPaint diagrams, as well as an alternative method.
(Hints are dropped throughout the answer in the form of which clues to use first)

On each floor there are three bedrooms: one on the left, one in the center and one on the right.

First we'll deal with these two clues:

Janice lives directly above Lucas and directly beside Marta, who lives on the left.
Eduardo lives on the right and one floor higher than Janice.

Next we will deal with this clue:

Camila lives directly above Janice.

Now we can deal with this:

On no floor only girls live.

At this point we can stop, since we already have the answer:

However we can finish the puzzle, using our last clue, so why stop there?

Giulia lives directly above Cristiane.

Rand al'Thor · Answer

Now we know who's living on the second floor, even without solving the rest of the puzzle:

But then

It seems there is a problem in the book where you found this! The problem is ill-posed.

Nine neighbors in a hotel

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