I was in Kathmandu in July for a work trip and stayed at Boutique Heritage Home (BHH) for 11 nights. I was warmly welcomed and looked after throughout my stay. Since it's the rainy season the bed & breakfast was pretty quiet and I was the only guest for at least five days. It is a beautiful building and if you want to experience what it is like to live in a local neighbourhood, with intimate and cosy settings then this is the place for you. They have a lovely little garden where breakfast is served, it is an oasis away from the dusty streets and the hustle & bustle of Patan.
During my stay, there was more building work taking place in the remaining building within the courtyard, the one on your right as you enter the premises. The plan is to add another 8 or 10 rooms and at some point turn this place from a B&B to a hotel with full food provision. The construction work was only done during the day so there was no disruption to my routine.
Patan is a lovely area and BHH is 5 minutes' walk from Patan Durbar Square, where there's a selection of a couple of decent rooftop restaurants and places to eat.
Due to the close proximity of neighbouring buildings, it is natural to be able to hear some noise from the neighbour's, the occasional barking dogs and chanting on a Saturday morning etc., but overall I slept well during my stay apart from a couple of mornings.
I'd recommend this place for a short stay because it is worth experiencing other areas in Kathmandu as well.