This place is worth visiting itself. Very, very special, filled with curiosities and art, we spent hours looking at all the wonderful pieces in there. And this is not one of those "airbnb apartments" but the real, authentic apartment. It's a gem and you should definitely enjoy an opportunity to stay there if you can.
The floor plan is mind bending as well (2 floors, open planning, high ceilings, patio, hard to explain, you have to see it) and the neighbourhood is the best - really nice bars and restaurants around - especially if you are looking for something beyond often boring offer of a central street.
As mentioned in other reviews there is not really sound isolation so if you have a snorer in your company, all of you will hear that :) But considering how amazing this place is, it is nothing.
We were two couples and the size of the apartment was perfect for us, there are two bathrooms as well. We met with Alex who kindly waited for us till the middle of the night as we had a late flight (which was delayed).
Check the tips, bar and restaurant suggestions guys have left in the apartment - better than trip advisor for sure!
I could not suggest this place enough.