On every home listing card, you'll find a little blue heart in the top-right corner. Click that to make a favourite, or click again to unfavourite the home. Once you've done that, you'll see that home appear with a blue pin on the map and you can search for your favourites using the main navigation bar, Homes/Favourites, or using the Filters screen. Or click this link: https://peoplelikeus.world/en/homes?favourites=1.