Simple flat - very good location. Walking distance to plaza de espana and gran via, also near to plenty of little eateries.
Comfortable bed, and functional kitchen and fridge. Had a few issues with the bathroom - hot water ran out very quickly; not enough for two consecutive showers. Also bathroom door was problematic and very hard to open once closed; useful not to close it fully to avoid anxiety of being locked in. Shutters are old and got stuck preventing us from shutting them.
Check-in was also a bit confusing as when instructions given were followed, we did not get a reply once outside the flat despite multiple calls and messages, meaning being stuck outside for 5-10 minutes before finally being let in. Not a huge deal as the weather was pleasant but a tad annoying after all the good communication via messages in the lead-up.
Decent for a short stay; would not recommend for a longer stay.