This apartment was nice and clean. Although google maps will tell you it is far from old town square, it is actually very quick and easy to get to. A 100m walk up the road and you are at the tram stop, which takes you directly to old town (and new town if you would like). There is a youth hostel opposite the tram stop to buy travel passes and even enjoy a cheap and quick breakfast. There is a cinema next to the apartment and a 10 minute walk away is a great Mexican restaurant - Les Adelitas (which has many branches in Prague).
The apartment itself is very secure, as no one can get in or out without the fob and even the lift does not operate without a key. The apartment is spacious and airy and was very clean for our visit. The beds are comfortable and the showers are nice and powerful. The only improvements to the apartment would be to have a TV and a microwave. Otherwise this apartment represents great value for money and is in a great location.
The surrounding town is a residential area so there is not too much noise and you feel safe walking around.