This hotel's raison d'etre is in its name: the super roof restaurant gives a view around the whole city. Rooms are basic, with hipster-rustic wood wallpaper and bright pops of colour for the door and wall art. The location is handy (especially for the metro from the airport), but potentially noisy. Request an upper floor, away from the square.
The same company runs the nearby 360 Degrees Pop Art hotel.