The White Sister by F. Marion Crawford

Madame Bernard had not overstated the advantages of the lodging she occasionally let to foreign ladies who travelled alone and practised economy, and Angela refused to occupy it till she had satisfied herself that her old governess's own room was just as large and just as sunny and just as comfortable.

In the first place, it was much bigger than she had expected, and when she had spread out all her possessions and put away her clothes, and had arranged her pretty toilet set and the few books that were quite her own, she found that she was not at all cramped for space. The ceiling was not very high, it was true, and there was only one window, but it was a very wide one, and outside it there was a broad iron shelf securely fixed, on which four good-sized flower-pots were set out in the sunshine. It was true that there were no flowers yet, but the two plants of carnations were full of buds and had been very carefully tended, a tiny rose-bush promised to bear three or four blossoms before long, and the pot of basil was beginning to send up curly green shoots. Opposite the window, and beyond the quiet street, there was a walled garden, in which there were some orange and mandarin trees.