Design Studio One is situated in central Amsterdam, within walking distance of the main sights, such as the City Centre, Red Light District, Museum District and The 9 Streets. It is very easy to get there from the airport - you just take the Airport Express Bus to Leidseplein, and walk 2 minutes from there.
Marja is a very friendly host, and she provided a very good service of letting us check in late in the evening, and storing our luggage on the day of departure.
We really enjoyed the free snacks and beverages on arrival, and in the mornings and afternoons we could make coffee, which was really good after a chilly walk around the city centre.
The only potential down-side of staying here is the noise from the people walking by late in the evening. There are restaurants and bars close by. We solved it by staying out ourselves in the evenings, and then we had no problem sleeping.
All in all we had a very nice weekend in Amsterdam, with Design Studio One as the perfect base for exploring the city.