Me and my girlfriend went to Amsterdam for a long weekend.
Before arriving Alex gave us all the informations needed to arrive to his apartment from the airport and followed us by texts through the trip to make sure we took the right trams/trains.
When we arrived at the flat Alex was waiting for us and was really friendly and he gave us a lot of informations (shops, bicycle rents, markets, restaurants, maps, tours around Amsterdam,...).
His flat is amazing: it has fast wireless, a good sound system, a good television, it was really clean, full of snacks, shower towels, plenty of space, a nice balcony with a table and a hammock, a nice coffee machine...
The position of the flat is not really central, but if you rent a bike you can reach the center of the city just in a snap. It is also really close to trams stops and other public transportations.
It was a great experience and we'll book again his flat if we plan to go again on Amsterdam.