It's a small studio, 5 mins walking from the famous Abbey Road Cross. So each day walking from/to the tube you see the Beatles fans are trying to make photos on the road and blocking cars traffic. Well, I knew about that and even made few photos for myself, but looking at it everyday is a kind of fun.
The apartments are very minimalistic, but has all neccessary equipment so you can wash and cook pretty the same as you do it at home. Also note that stairs from the ground floor are steep, so it may be hard to get there for chidlren and old people.
The place is very quiet. No loud pubs, night clubs or restaurants close to it. But there is wonderful gothic church nearby, it looks beautiful in a London mist. Two tube stations in a walking distance and few bus stops provide the good transport access.
The closest food shops are located near the tube stations. There is nice net shop Tesco near the St. John's Wood station with some special offers and good choise of meet and cheese. Few smaller shops are located near the Maida Vale station. They have more sweets, fruits and vegetables as for me, but have a fee when you use a credit card for payment.
There is also a small cafe at the street end (1-2 mins to walk), but we didn't visit it so I have nothing to say.
To resume, Jeffrey's studio is an excellent value for it's price. I would recommend it for single travellers and couples.