We have just returned from a lovely stay at Jan’s loft. It is a very attractive space in a great location - well decorated, clean and comfortable. Public transport is easily accessed within a few minutes and so getting to wherever you need to go in the city is very straightforward.
The kitchen was well equipped which gave us a bit of flexibility for cooking etc. There is also a nice bakery around the corner (best to bring cash) and there’s also a Rewe supermarket / shopping mall about 15 mins walk away.
Check in was straightforward as was checking out.
I would not hesitate to stay again and really recommend Jan’s loft for a stay in Berlin. It’s an exciting, diverse city and the loft provides a superb base for exploring what Berlin has to offer. Also, Ewald the dog is very sweet!