We had a pleasant stay at Martins place.
Before we went, we already had contact and he responded quickly and kind to all our questions. Very nice that parking is free in front of the building. The metro is at the corner. Free wifi!
It was no problem that we arrived earlier than expected. We sent Martin a message and he was waiting for us when we arrived. The place was clean, there was water, milk, coffee and tea, shampoo and soap. Beds are great, only the pillows are thin, so maybe bring your own (or use 2 :-)). The shower is the best ever! And nice and plenty towels. Martin is willing to help (tips were to go, questions) and very kind.
When we go back to Berlin, we go back to Martin!