The flat is in a good location for transport and access to La Latinas, where you can enjoy some amazing tapas at Juana La Loca. Alma De Julián Becerro is also close by and has an amazing selection of cured Spanish meats, to eat at the flat or take home as gifts.
Central Madrid is all walkable. From this flat it takes 20 minutes to the city centre Sol/Plaza Mayor area and about 30 mins to Prado Museum/Retiro park area. If walking is not your thing, the transport links are very good with Metro No.5 (green) which goes central and then north, on the doorstep. A short walk to Tirso de Molina (No.1 Light Blue) to go towards the Park, Museums & Main Station.
The flat it self was nice, very spacious for a couple. We enjoyed having separate areas for bed, living/dining, kitchen and bathroom. There are several supermarkets and cafes close by.
It isn't the quietest flat ever since it faces a main road, but traffic is very light in the evenings and it never was a problem. All windows have pull down shutters that block 100% of the street lights at night.
There is no kettle which was a shame, and I think the host should provide one for future guests. Same with the hairdryer, which was listed as one of the amenities, but was missing.
Bed is firm but I prefer this so that was a plus for me. The pillow is lacklustre. I used two and still it wasn't great.
The shower has nice pressure, especially if you turn the head into massage mode which gives you a high pressured fine mist spray of water.
The flat is managed by a company called PYR Select. Check-in is from 15:00 until 21:00. Arrivals out of this schedule have an extra charge of €40. It wasn't a problem for us, but I think this should be stated on booking. Check-out is until 12:00 (noon).
Check in was easy, Carlos from PYR met us outside the flat and handed us the keys. Showed us around the flat and gave us tourism recommendations.
The flat is secure, clean and worth considering if you're looking for an apartment style stay in Madrid.