Martin is very nice guy, communicates very well. Location is perfect, apartment and room are very clean. Couple issues were that I had connection problems with the wifi during the 3 days I was there, as he needed to restart it 3-4 times for me to see the network (phone and laptop). Apparently this only happened with me, but I never had issues anywhere else. His stove also did not work, and was supposed to have it repaired but was not (not a big deal).
Biggest problem occurred on my last night there, as his new guests in the other room were 4 guys who were partying a little too hard, and woke me up at 3AM banging on the door, as they were also smoking in the room. I told Martin about it the next morning (he was away), and he sincerely apologized and said he kicked them out for their behaviour. Hopefully he takes the time to meet his tenants in the future, and emphasizes the noise policy.