We stayed at Joanna and MP's for a long weekend to celebrate my birthday and it was a brilliant weekend. I have been to Amsterdam many times and so can say quite honestly this is a fabulous, clean, well decorated and spacious apartment with everything you should possibly need in a great area for shopping, eating and drinking. The flat is also extremely close to the train station and so very easy to get to by foot.
Joanna was very welcoming and kindly allowed us a flexible check in and we were allowed to leave our bags when we checked out to collect later on in the day. Joanna is also full of ideas of places to go should you need any direction - especially places to eat!
Amsterdam is a wonderful city and staying here only enhances a wonderful experience, I would definitely recommend staying here - just be warned yes the stairs are steep but are definitely manageable just be careful with your luggage and you shouldn't have any problems at all.
Thanks Joanna we will definitely be back - the only problem will be finding a time they aren't booked up!