My girlfriend and I stayed for 2 nights at The Room Upstairs. We had such a lovely time with a very friendly and caring host. The room is just as lovely as on the pictures - clean and cozy. The breakfast was delicious (buns, yoghurt, juice, tea, eggs :) ) !!! We also got plenty of advice of where to go and what to see during our stay in Amsterdam. We also got helpful information of how to get to the place and what transportation tickets we should buy for the stay.
Overall, we had a great stay. We enjoyed (the short) time living at Marta's place. She was very sweet. I would always stay at 'The Room Upstairs' again :)