Are there either any large windows or doors?
No, there is a window but it is small.
    src        edge_attr  dst
0     0   to the left of   13
1     0   to the left of    2
2     0   to the left of   19
3     0   to the left of    8
4     0  to the right of   11
5     0  to the right of    9
6     1   to the left of    3
7     1   to the left of   12
8     2  to the right of   11
9     2  to the right of    0
10    2   to the left of    8
11    3   to the left of    6
12    3  to the right of    4
13    3   to the left of   21
14    3  to the right of   12
15    3  to the right of    1
16    4   to the left of    3
17    6  to the right of   12
18    6  to the right of   15
19    6  to the right of    3
20    7  to the right of   15
21    8  to the right of    0
22    8  to the right of    2
23    9               on   18
24    9   to the left of    0
25   11   to the left of    2
26   11   to the left of    0
27   11   to the left of   18
28   11   to the left of   19
29   12   to the left of    3
30   12  to the right of    1
31   12   to the left of    6
32   12   to the left of   21
33   13  to the right of    0
34   15   to the left of   17
35   15   to the left of   21
36   15   to the left of    7
37   15               in   10
38   15   to the left of   16
39   15   to the left of    6
40   16  to the right of   15
41   17  to the right of   15
42   18  to the right of   11
43   18   to the left of   19
44   19  to the right of   18
45   19  to the right of   11
46   19  to the right of    0
47   20               of   10
48   21             with    7
49   21             with   17
50   21  to the right of   12
51   21             with    6
52   21  to the right of    3
53   21  to the right of   15
54   21             with   16
55   21             with   13