I stayed at TJs for four weeks fora University placement. This place is great value. Located right near the bus route 390 which goes into town. 20 mins on the 390 gets you to St Pancras international station/Bloomsbury area. Caledonian road station is 10 mins walk away and is about 50mins direct to Heathrow. Regent canal is about 15-20 minute walk. There’s a couple of small supermarkets close by. Larger supermarkets at Nags head about 15 mins walk or catch the 393 from right outside.
In short, this place is a great launchpad to see London for a good price. For me it was great but if you’re looking for something located in the midst of the action or somewhere that offers upmarket accomodation then this probably isn’t for you.