This place has four floors with two units per floor. One of these is occupied by the manager...I'm not sure how many - if any at all - are occupied by long-term tenants. My unit was on the top floor, which is 73 steps up. And no lift! So be prepared to carry your luggage up a long, winding staircase with some uneven steps. Despite it being on the top floor, the unit was extremely noisy, almost if it was designed to get all the noise from the busy streets and the bar below. The bedroom had two very small beds. The previously mentioned sticky surfaces are likely due to the cleanser they use (floors were not sticky, just counter tops). There is NO signage that identifies this is the Niddry Apartments. The main door looks like it belongs to the ground-level bar and is simply designated with the numeral '5'. Check-in time is limited to two hours. I didn't use the kitchen so can't comment on this. The big feature of this property is that it is right in the middle of Edinburgh's very active nightlife. It is best suited to those who want this location, need a kitchen and can live with the noise, small beds, staircase, and narrow check-in time frame. Otherwise, I strongly suggest a hotel. My stay was in mid-September, so I can't remark on the adequacy of the heating system.