Overall a great stay. We met Genefer (Steffans assistant) who walked us to the appartment and gave us some great tips on the city. On arrival she showed us a map and talked us through some great areas worth exploring. The appartment itself is lovely - mostly very clean, lots of equipment in the kitchen, great views and very close to plenty of shops, restaurants and public transport (only 2 stops from Alexander Platz).
The major downfall of this place is the WiFi. It's very hit and miss and by that we mean it doesn't cut off for a minute or 2 - it stops for 5 or 6 hours at a time, and when it's back it's very temperamental and is still so slow it is almost not worth bothering with. We contacted the host and we were informed that the router is infact in a different apartment so there was no way of us having a look ourselves. We wouldn't recommend this place if you rely on WiFi for work (unless you have plenty of data) but overall, a great place.