I can recommend staying at Joe's.
+ perfect central location
+ clean room as on the pictures
+ soap and towels included
+ kitchen annex with microwave, fridge, kettle and basic dishes and cutlery
+ easy communication with the host
- no air condition, but there's an electric heater - as we were in March, it was necessary as the room itself was quite cold
- quite low ceiling and short bed - might be uncomfortable for people over 190cm
Anyway, all of the advantages outweigh the small shortcomings.