Great view and charming apartment in Alfama neighborhood. I think it would be a perfect apartment for one or two people as the upstairs bed is large enough. Stairs in the building and apartment (like all staircases in the neighborhood) are narrow so I would bare this in mind if you have a lot of luggage. As others have mentioned, the bathroom is on the smaller side but perfectly functional.
Most importantly, the apartment is located near the tram, many of the sites you will want to see, and has a stunning view. Would recommend!