Had a great time at Marjolein's place. She gave us a super helpful map with lots of info and recommended an amazing restaurant - AI Maranchai (or something like that) - that I highly recommend. The decorations are great and the place is lovely. My wife and I especially enjoyed cooking breakfast then eating it on the rooftop patio.
Location is also great - right in the center of old town and a 10 min walk from the train / bus station.
The bathroom (separated off from the bedroom) was good enough although the light switch is very high up (my ~1.5 meter tall wife couldn't reach it). No big deal - I just had to turn it off and on each time for her.
Only real downside is climbing up 3 flights of stairs to reach the place. But hey, exercise is good, right? :)
Also Marjorlein's dog is super cute.
Anyway I recommend the place and would totally stay there again.