The guest house is clean, safe, and comfy!
Our room had multiple lovely balconies to look down upon the street and restaurants, very fun people watching. If you’re a night owl you will enjoy, but if you sleep early then be advised that you will hear Fado singers and people eating and drinking well into the night.
The facilities are pretty bare-bones (no toiletries, no kitchen, no bag storage), so book this only if you plan to spend most of your time outside exploring the city. If you prefer more space to hang out in and a kitchen, then opt for renting an individual apartment.
The guesthouse has at least 6 rooms, with 2 bathrooms/showers. This was the only issue that came up where sometimes we were waiting in the morning to use the bathroom.