I stayed in Tycho and Justin's apartment for about a week with my girlfriend, and we absolutely loved it! Amsterdam is already a really romantic city, but staying at this apartment made it even more so. As the name states, the apartment is located inside what used to be an old timey school: the building is beautiful both from the outside and inside. Whoever remodeled the school into apartments did a really good job paying respects to the building's past, but also to keeping the apartments modern and fresh. We saw no problems that usually plague old buildings: plumbing was great, and the inside was sparkling clean. The shower worked great, and we had no problems with drainage. The wifi was fast and stable.
The apartment is in the "attic" of the building, on the top floor. This means that to get to it, you'd need to first climb ~70 steps of stairs, but we did not mind this at all, and after a couple of climbs, we became totally used to it. Being on the top floor also means that some of the walls are slanted, and the ceilings are *really* high. The bed is really comfy and it is situated right across a small window, so that when you lie on the bed, you can look right outside. The high white-colored ceilings combined with being on the top floor sometimes made it seem like we were in the clouds – truly magical. Justin and Tycho have a great sense of decor, and the apartment is extremely stylish. Differing from the photos, the hosts also added a black drape on the big window that looks out on the patio. It makes total sense as it still lets plenty of light in, but also adds more privacy. Speaking of privacy, the hosts were great at giving us space, and most of the time we felt like we were staying in our own apartment.
The neighborhood around the apartment is so nice and quaint! It's mostly a residential area with many families, and has so many great food options right next door, which is convenient. The touristy areas are within a walking distance too, but it's the neighborhood in the direct vicinity that really stole our hearts.
It's hard to think of negatives for this listing. The only thing that kind of threw us off (and this is visible from the photos) is that the bathroom in the bedroom has no door. While we did not mind this as a couple, friends staying together could potentially be uncomfortable. But Tycho and Justin do remedy this by opening access to another bathroom that has a toilet right outside the room.
Overall, we loved our stay and would recommend it to anyone else visiting Amsterdam.