I had a great time at Martin and Jan's. They were extremely accommodating and always were making sure that you are comfortable. They're really welcoming and fun guys. They invited me to hang out with them for a BBQ at their place and I got to know other locals. Jan also showed me and others around in the city and brought us to some local bars that were hidden in the middle of busy tourists areas which was cool to see.
Their locations is easy and only a couple minutes from a couple different subway stops. There's some good places to eat close by and bars. A Tesco express is about 5-7 min walk if you want to buy some small groceries
Overall I recommend staying there and you'll fee at home with some cool and funny guys.