Map of Roma. Each letter means a room. Rough drawing.

                  qqqqq                     C
                  qqqqq                   CCCCC
                  qqqqq                     C  C
                  qqqqq                    CCC  C
                    T                       C    C
  CCCC                                      s   CCC   C
C CCCC C                                   T     C    C
CC CC CC                                   s    CCC   C
CC CC CC                                   s     C   C
C CCCC C                             sNNNNss     CCCC
  CCCC     AAA       S               ss   s
    C      A A      S S     PPP       ss  s       C  St. Peter Cathedral
    C      AAA      S S      P        ss  s       N  Plaza Navona
    C       A        S       P        s   s       F  Fountain of Trevi
   sTssssssssssssssssssssssssssssssssssssss       P  Parliament
  s              M                 s              S  Senate
  s             MMM               ss              A  Arch of Constantine
 s              MMM              s                C  Coliseum
                                  ss              M  Mall of Traiano
                                    s             s  streets
                                     F            q  modern quarter
                                                  T  taxi station (wink wink)