Are there either any mattresses or mirrors in the photograph?
No, there are no mirrors or mattresses.
    src        edge_attr  dst
0     0           behind    2
1     0   to the left of   10
2     0      in front of    2
3     0   to the left of    6
4     1            below   10
5     1  to the right of   11
6     1  to the right of    2
7     1  to the right of    9
8     2          next to    7
9     2      in front of    0
10    2             near    6
11    2   to the left of   11
12    2   to the left of    1
13    2           behind    0
14    2             near    9
15    3         covering    5
16    5       covered by    3
17    6             near    2
18    6          next to    2
19    6      in front of   10
20    6  to the right of    0
21    6  to the right of   11
22    6   to the left of    8
23    7           behind   10
24    7             near    2
25    8  to the right of    6
26    8  to the right of   10
27    8           beside    7
28    9           beside    7
29    9   to the left of    1
30    9          next to    2
31   10           behind    6
32   10               on    1
33   10      in front of    7
34   10           facing    5
35   10   to the left of    8
36   10            above    1
37   10  to the right of    0
38   10  to the right of   11
39   11   to the left of    6
40   11  to the right of    2
41   11   to the left of    1
42   11   to the left of   10