I had a lovely stay at Isabel's home. As the single room was under renovation I in the end stayed in the double room. The single room also looked nice and comfortable to me. Isabel's home is about 15 minutes from the train station up a hill; so you will do your work out. That said Sintra is hilly and you can also take a bus to reach the home. Overall I spend 3 nights and saw plenty of the beauty Sintra has to offer. From Sintra I also went by bus to the most Western part of Europe and was impressed by its beauty. Last I went swimming in Cascais in November. So book some time at Isabel's to see and enjoy all this.