We stayed on the love houseboat in July 2013 for our wedding anniversairy for 3 nights and had a fantastic stay. Location is brilliant and very easy to get to from centrale station and walking distance to all the main areas. As the owner was away on holiday we were greeted by 2 friendly girls at the boat whom went through everything we needed to know about the boat and also local areas on where to shop for food/tourist areas to visit. It is very safe and secure.
If you havent been to amsterdam and want to experience it in a truely unique way I would definately book this boat, it made our stay in amsterdam extra special!