Convenient location right in front of Shepperd's Market in lovely Mayfair. Entrance is quaint and looks like a private house entrance. 9 Hertford is a small and private building with serviced apartments. The noise from the pubs at Shepperd's Market at night may be uncomfortable for those staying on the apartments facing Hertford Street. Weekends the area gets very busy. Tube is walking distance from 9 Hertford. Used frequently the Green Park Station. Service is courteous and friendly, however limited to a staffed reception desk at limited hours besides housekeeping and maintenance. Guests do have a key to entrance for off hours. Checking in/arriving off hours is also possible on special instructions from management. There is availability for private paring at their garage. Stayed in a suite on the 4th floor facing Hertford Street. Bedroom is on the smallish size, however comfortable. As it is the last floor, the windows inside the room are angled, taking some space and staying on the way. Maintenance and decor could use some upkeeping. Electricity outlets are an issue. However, reception can supply power *****s to add outlets as they did efficiently in my case. Bathroom has an odd design with toilet very close to the door, which was uncomfortable. Bath amenities were good quality and towels sufficient. Kitchen is conveniently equipped and comes with a washer/dryer. There is a nicely sized dining table and a working desk besides a comfortable sofa at the living area. Overall had a comfortable nine-night stay at the 9 Hertford serviced apartments. Would have returned last February (2024), however, could not get a response from them on attempting several times to make a reservation. There was ample availability, however, did not trust their website system. as for this previous experience. Made a reservation and received a message that the price was wrong. Finally stayed at the Cheval Gloucester without regrets.