This is a great and convenient place to stay, very close to the Estoril beachfront and station and it's therefore great to use both for a beach holiday or as a quiet place from which to explore the Lisbon, Cascais and Sintra areas! You can get a weekly train pass for the Cascais-Lisboa line for only 12 euros, which is a great deal if you plan to use the train frequently. A morning walking trip to Cascais along the beachside is highly recommended too, you will see all kinds of locals as well as tourists on their gym routines.
The cottage/woodshed itself is very cute, we especially really liked the bathroom, the outdoor space (even though we didn't use it much because it was mostly cloudy), and we both slept very well on the beds. Highly recommended!